2003 GMC Sierra 2500 HD Electrical Parts
Find Your Specific 2003 GMC Sierra 2500 HD Electrical Parts
Below you will find various in-demand GMC Electrical Parts, components and accessories for your 2003 Sierra 2500 HD. Advance Auto Parts has popular Sierra 2500 HD parts like Electrical Motors, Outlet Adapters, Switches, Sensors & Relays and more. You’ll also find aftermarket and OEM Electrical Parts for other Sierra 2500 HD model years including
2014,
2015,
2016,
2017,
2018,
2019,
2020,
2021,
2022 and more. Select a category of 2003 GMC Sierra 2500 HD Electrical Parts below and start saving instantly.
Popular 2003 GMC Sierra 2500 HD Electrical Parts Categories
Essential Electrical Parts for 2003 GMC Sierra 2500 HDs
CURT – CURT Replacement OE 5-Way Flat Socket (Plugs into USCAR), 56515 (Part No.56515)
from
$29.99
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 5-way flat connector socket and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.
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GM Genuine Parts – GM Genuine Parts Gray Multi-Purpose Pigtail, PT3923 (Part No.PT3923)
from
$46.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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GM Genuine Parts – GM Genuine Parts Black Multi-Purpose Pigtail, PT2232 (Part No.PT2232)
from
$48.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Multi-Use Connector, PTA1178 (Part No.PTA1178)
from
$46.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTA2235 (Part No.PTA2235)
from
$87.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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GM Genuine Parts – GM Genuine Parts Black Multi-Purpose Pigtail, PT2769 (Part No.PT2769)
from
$64.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Multi-Use Connector, PTA1783 (Part No.PTA1783)
from
$84.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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ACDelco – ACDelco Multi-Purpose Pigtail Kit, PT3846 (Part No.PT3846)
from
$41.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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GM Genuine Parts – GM Genuine Parts Multi-Purpose Pigtail Kit, PT3833 (Part No.PT3833)
from
$41.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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GM Genuine Parts – GM Genuine Parts Multi-Purpose Pigtail, PT2054 (Part No.PT2054)
from
$106.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Multi-Use Connector, PTA1129 (Part No.PTA1129)
from
$58.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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ATP – ATP Repair Harness, JE-32 (Part No.JE-32)
from
$404.99
ATP Repair Harness, JE-32. DRIVELINE – TRANSMISSION PARTS>TRANSMISSION PARTS>TRANSMISSION PARTS-MISCELLANEOUS>TRANSMISSION PARTS-MISCELLANEOU from ATP
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Carquest – Carquest A/C Auto Temperature Control Relay, R3110 (Part No.R3110)
from
$20.99
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.
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ACDelco – ACDelco Black Multi-Purpose Pigtail, PT2647 (Part No.PT2647)
from
$31.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Dorman – Dorman Engine Oil Pressure Sensor, 926-701 (Part No.926-701)
from
$80.99
This engine oil pressure sensor is designed to match the function of an original sensor on specified vehicles. It is engineered to help accurately monitor oil pressure when an original sensor has failed from heat or internal component damage.
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GM Genuine Parts – GM Genuine Parts 7-Way Female Gray Multi-Purpose Pigtail, PT1391 (Part No.PT1391)
from
$97.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Multi-Use Connector, PTA2144 (Part No.PTA2144)
from
$38.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Dorman – Help – Dorman – Help Power Outlet Cap, 57023 (Part No.57023)
from
$8.29
This 12 volt accessory power outlet cover is designed to match the fit, appearance and function of the original cover on specified vehicles, and is engineered for durability and reliable performance.
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Carquest Premium – Carquest Multi-Use Connector, PTA2017 (Part No.PTA2017)
from
$47.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTC1637 (Part No.PTC1637)
from
$64.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTA2415 (Part No.PTA2415)
from
$37.49
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTA2952 (Part No.PTA2952)
from
$84.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
Carquest Premium – Carquest Multi-Use Connector, PTA1007 (Part No.PTA1007)
from
$19.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
Carquest Premium – Carquest Multi-Use Connector, PTA1799 (Part No.PTA1799)
from
$35.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTA1205 (Part No.PTA1205)
from
$41.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
GM Genuine Parts – GM Genuine Parts 2-Way Male Black Multi-Purpose Pigtail, PT786 (Part No.PT786)
from
$40.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More
GM Genuine Parts – GM Genuine Parts 3-Way Female Black Multi-Purpose Pigtail, PT420 (Part No.PT420)
from
$41.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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CURT – CURT Replacement OE 7-Way RV Blade Socket (Twists into USCAR), 56415 (Part No.56415)
from
$25.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way OEM USCAR replacement connector is designed to plug into a twist-in OEM vehicle socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection (see application info to verify fitment with your vehicle).
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Upgrade your 2003 GMC Sierra 2500 HD with Top-Quality Electrical Parts
When it comes to maintaining or upgrading your 2003 GMC Sierra 2500 HD, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Electrical Parts are key to keeping your Sierra 2500 HD functioning at its best. At Advance Auto Parts, we offer a wide selection of 88 Electrical Parts for the 2003 GMC Sierra 2500 HD, designed to meet your needs without breaking the bank.
From
Electrical Motor
replacements to
Outlet Adapters
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Electrical Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Electrical Parts for your 2003 GMC Sierra 2500 HD at great prices.
Our Electrical Parts inventory for this model
ranges from just $5.29 to $419.99, with
an average price of $69.75.
Our 88 Electrical Parts in stock come from 8 trusted brands, so you’re sure to find the right part for your 2003 GMC Sierra 2500 HD without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 GMC Sierra 2500 HD, we stock popular OEM and aftermarket Electrical Parts from top names
like GM Genuine, Carquest, Dorman, and more.
GM Genuine Electrical Parts
start at just $41.99 and boast an impressive 4.6 stars average rating from customers.
Carquest and Dorman also bring quality to the table, with Electrical Parts available starting at $20.99, and at an average 4.4 stars rating.
With 3,524 customer reviews and counting, our 2003 GMC Sierra 2500 HD Electrical Parts have a strong track record of reliability, ensuring you can trust your purchase.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Electrical Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants
and more to make sure your 2003 GMC Sierra 2500 HD is always ready to roll. We’re committed to providing you with everything you need to keep your Sierra 2500 HD in top shape, all in one place.
Start shopping confidently below for your 2003 GMC Sierra 2500 HD!
Best-Selling Electrical Motors for 2003 GMC Sierra 2500 HDs
Enhance the driving experience in your GMC with 8 quality Electrical Motor components, starting at $49.99.
Dorman – Dorman Power Window Regulator and Motor Assembly (OE Fix), 741-644 (Part No.741-644)
from
$88.99
The original equipment window regulator fails when the cable stretches over time. This Dorman OE FIX replacement features added cable guides and sheathing to help resist reel binding.
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Dorman – Dorman Power Window Regulator and Motor Assembly (OE Fix), 741-579 (Part No.741-579)
from
$89.99
The original equipment window regulator fails when the cable binds because it has poor tension. This Dorman OE FIX replacement regulator incorporates cable tension springs to resist cable reel binding.
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Dorman – Dorman Power Window Lift Motor, 742-122 (Part No.742-122)
from
$56.99
This power window regulator motor is designed to match the performance of the original equipment motor on specified vehicle makes, models and years. When a factory motor fails from damage, fatigue or collision impact, this motor is engineered to help restore original equipment functionality.
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Dorman – Dorman Power Window Lift Motor, 742-123 (Part No.742-123)
from
$61.99
This power window regulator motor is designed to match the performance of the original equipment motor on specified vehicle makes, models and years. When a factory motor fails from damage, fatigue or collision impact, this motor is engineered to help restore original equipment functionality.
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GM Genuine Parts – GM Genuine Parts Front Passenger Side Power Window Regulator with Motor, 20945139 (Part No.20945139)
from
$419.99
GM Genuine Parts Power Window Motor and Regulator Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Window regulators roll your vehicle’s window up and down, and the motor is what powers the regulator. By being powered, the window can be ‘rolled’ up and down with the push of a button. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).
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AISIN – AISIN Power Window Regulator Assembly with Motor, RPAGM-029 (Part No.RPAGM-029)
from
$117.99
AISIN Window Regulator Assemblies and Motors are mechanical and electrical components that work together to raise and lower the power windows in a vehicle. The window regulator assembly is the mechanical component that consists of gears, tracks and other parts that move the window up and down. The electric motor is the component that provides the power to move the window. Together, they form the power window system that allows the driver and passengers to easily raise and lower the windows with the push of a button.
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AISIN – AISIN Power Window Motor Assembly, RMGM-001 (Part No.RMGM-001)
from
$49.99
AISIN Window Regulator Assemblies and Motors are mechanical and electrical components that work together to raise and lower the power windows in a vehicle. The window regulator assembly is the mechanical component that consists of gears, tracks and other parts that move the window up and down. The electric motor is the component that provides the power to move the window. Together, they form the power window system that allows the driver and passengers to easily raise and lower the windows with the push of a button.
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AISIN – AISIN Power Window Motor Assembly, RMGM-003 (Part No.RMGM-003)
from
$49.99
AISIN Window Regulator Assemblies and Motors are mechanical and electrical components that work together to raise and lower the power windows in a vehicle. The window regulator assembly is the mechanical component that consists of gears, tracks and other parts that move the window up and down. The electric motor is the component that provides the power to move the window. Together, they form the power window system that allows the driver and passengers to easily raise and lower the windows with the push of a button.
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Most Popular 2003 GMC Sierra 2500 HD Outlet Adapters
Customize your GMC with 1 Outlet Adapters products
like 12 Volt Accessory Power Outlet Covers, all
priced under $5.29.
Dorman – Help – Dorman – Help Plug Retainer, 57020 (Part No.57020)
from
$5.29
This 12 volt accessory power outlet cover is designed to match the fit, appearance and function of the original cover on specified vehicles, and is engineered for durability and reliable performance.
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Top Picks for 2003 GMC Sierra 2500 HD Switches, Sensors & Relays
Upgrade GMC Sierra 2500 HDs with top-quality Switches, Sensors & Relays parts, including 1 OEM and aftermarket selections for your 2003 model.
Carquest – Carquest A/C Auto Temperature Control Relay, R3110 (Part No.R3110)
from
$20.99
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.
See More
In-Demand Wire Connectors for 2003 GMC Sierra 2500 HDs
Select from 11 premium Wire Connectors parts for your 2003 GMC Sierra 2500 HD, with prices ranging from $12.99 to $97.99.
Carquest Premium – Carquest Multi-Use Connector, PTA1326 (Part No.PTA1326)
from
$12.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
GM Genuine Parts – GM Genuine Parts 10-Way Female Black Multi-Purpose Pigtail, PT1105 (Part No.PT1105)
from
$97.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More
Carquest Premium – Carquest Multi-Use Connector, PTA1274 (Part No.PTA1274)
from
$47.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
GM Genuine Parts – GM Genuine Parts Black Multi-Purpose Pigtail, PT2194 (Part No.PT2194)
from
$47.49
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More
GM Genuine Parts – GM Genuine Parts 6-Way Female Black Multi-Purpose Pigtail, PT392 (Part No.PT392)
from
$37.49
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More
GM Genuine Parts – GM Genuine Parts Multi-Purpose Pigtail, PT1116 (Part No.PT1116)
from
$86.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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GM Genuine Parts – GM Genuine Parts 10-Way Female Gray Multi-Purpose Pigtail, PT1280 (Part No.PT1280)
from
$73.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More
GM Genuine Parts – GM Genuine Parts Multi-Purpose Pigtail, PT3215 (Part No.PT3215)
from
$70.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More
Carquest Premium – Carquest Multi-Use Connector, PTA1088 (Part No.PTA1088)
from
$46.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
GM Genuine Parts – GM Genuine Parts 4-Way Female Black Multi-Purpose Pigtail, PT548 (Part No.PT548)
from
$36.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More
GM Genuine Parts – GM Genuine Parts Multi-Purpose Pigtail Kit, PT3786 (Part No.PT3786)
from
$25.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Most Sold 2003 GMC Sierra 2500 HD Electrical Connectors
Explore our best-selling GMC parts for the 2003 Sierra 2500 HD among 61 OEM and aftermarket options starting from $11.99.
GM Genuine Parts – GM Genuine Parts 1-Way Male Gray Multi-Purpose Pigtail, PT308 (Part No.PT308)
from
$41.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Engine Oil Pressure Sensor with Filter, SBC1004 (Part No.SBC1004)
from
$72.99
Carquest Premium oil pressure sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium oil pressure sensors and switches are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium oil pressure sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. They are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered, and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Carquest – Carquest Engine Oil Pressure Sensor, 59C1001 (Part No.59C1001)
from
$61.99
Carquest oil pressure sensors and switches are designed to meet original equipment (O.E.) fit, form and function and are built to ensure reliable performance at a great price. Each oil pressure sensor or switch is 100% tested to ensure proper performance and a trouble-free installation. Carquest oil pressure sensors and switches are a cost-effective solution for your engine management repair. They are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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Dorman – Dorman Engine Oil Pressure Sensor with Filter, 926-040 (Part No.926-040)
from
$64.99
This engine oil pressure sensor is designed to match the function of an original sensor on specified vehicles. It is engineered to help accurately monitor oil pressure when an original sensor has failed from heat or internal component damage.
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Carquest Premium – Carquest Multi-Use Connector, PTA1007 (Part No.PTA1007)
from
$19.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Ignition Knock (Detonation) Sensor Harness, JAC1076 (Part No.JAC1076)
from
$38.99
Carquest Knock Sensors respond to a wide range of engine knock frequencies providing accurate engine condition to the ECM for optimal ignition timing. Highest quality piezoceramic element manufactured to tight tolerances for increased durability. All Carquest Knock Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.
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Carquest Premium – Carquest Multi-Use Connector, PTA1003 (Part No.PTA1003)
from
$26.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More
GM Genuine Parts – GM Genuine Parts Black Multi-Purpose Pigtail, PT2830 (Part No.PT2830)
from
$48.49
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More
GM Genuine Parts – GM Genuine Parts Gray Multi-Purpose Pigtail, PT3923 (Part No.PT3923)
from
$46.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Multi-Use Connector, PTA1004 (Part No.PTA1004)
from
$11.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTA1044 (Part No.PTA1044)
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$19.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Multi-Use Connector, PTA1089 (Part No.PTA1089)
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$38.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Carquest Premium – Carquest Engine Oil Pressure Sensor, SBC1074 (Part No.SBC1074)
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$117.99
Carquest Premium oil pressure sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium oil pressure sensors and switches are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium oil pressure sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. They are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered, and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
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CURT – CURT Replacement OE 4-Way Flat Socket (Plugs into USCAR), 55515 (Part No.55515)
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$35.49
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 4-way flat connector socket and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.
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GM Genuine Parts – GM Genuine Parts Black Multi-Purpose Pigtail, PT2135 (Part No.PT2135)
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$53.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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GM Genuine Parts – GM Genuine Parts Multi-Purpose Pigtail, PT2054 (Part No.PT2054)
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$106.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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GM Genuine Parts – GM Genuine Parts Multi-Purpose Pigtail, PT168 (Part No.PT168)
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$36.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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ACDelco – ACDelco 2-Way Female Gray Multi-Purpose Pigtail, PT209 (Part No.PT209)
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$30.49
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Multi-Use Connector, PTA1205 (Part No.PTA1205)
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$41.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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GM Genuine Parts – GM Genuine Parts 3-Way Female Black Multi-Purpose Pigtail, PT420 (Part No.PT420)
from
$41.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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GM Genuine Parts – GM Genuine Parts 7-Way Female Gray Multi-Purpose Pigtail, PT1391 (Part No.PT1391)
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$97.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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Carquest Premium – Carquest Multi-Use Connector, PTA1129 (Part No.PTA1129)
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$58.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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CURT – CURT Replacement OE 7-Way RV Blade Socket (Twists into USCAR), 56415 (Part No.56415)
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$25.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way OEM USCAR replacement connector is designed to plug into a twist-in OEM vehicle socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection (see application info to verify fitment with your vehicle).
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Carquest Premium – Carquest Multi-Use Connector, PTA2165 (Part No.PTA2165)
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$70.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
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Top-Rated Electrical Parts Brands For Your 2003 GMC Sierra 2500 HD
Shop for the best-rated brands offering Electrical Parts and other products for your 2003 GMC Sierra 2500 HDs. Below you’ll find some of our best rated Electrical Parts from GM Genuine, Carquest, and Dorman, and more. Electrical Parts from these brands that fit a 2003 Sierra 2500 HD start at just $20.99 and are rated as high as 4.6 stars. OEM and aftermarket Electrical Parts don’t get more top quality, durable, and affordable than from the brands below.
Popular GM Genuine 2003 GMC Sierra 2500 HD Electrical Parts
When it comes to maintaining or upgrading your 2003 GMC Sierra 2500 HD, using quality Electrical Parts is essential to ensure durability and a perfect fit. GM Genuine ticks all of those boxes. We offer a wide selection of GM Genuine Electrical Parts, specifically designed for the 2003 GMC Sierra 2500 HD. With over 1 GM Genuine brand Electrical Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $41.99. Plus, with over 1 customer reviews and an average rating of 4.6 stars, you can trust that our GM Genuine Electrical Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
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$41.99
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GM Genuine Parts 1-Way Male Gray Multi-Purpose Pigtail, PT308
“This plug was a perfect fit”
Popular Carquest 2003 GMC Sierra 2500 HD Electrical Parts
Carquest auto parts is one of the highest quality Electrical Part brands in the market. Any 2003 GMC Sierra 2500 HD owner should feel confident when installing genuine Carquest parts in their vehicle. To ensure the best fit and performance for your 2003 Sierra 2500 HD, Advance Auto Parts carries a full inventory of 1 Carquest Electrical Parts. Plus you will be keeping your GMC in peak condition while saving money because prices on these Carquest Electrical Parts range up to $20.99, plus, with more than 7 customer reviews and an impressive 4.4 stars average rating, you can be confident the Fram Electrical Parts below will deliver on both quality and value.
FAQs for 2003 GMC Sierra 2500 HD Electrical Parts
Which Electrical Parts are best-sellers for 2003 GMC Sierra 2500 HDs?
Out of 88 Electrical Parts that fit 2003 GMC Sierra 2500 HDs, the following parts are the top sellers:
- Carquest Engine Oil Pressure Sensor with Filter, SBC1004 (12450499) – $72.99
- Carquest Engine Oil Pressure Sensor, 59C1001 (12453406) – $61.99
- Dorman Power Window Lift Motor, 742-123 (22149260) – $61.99
What’s the price range for 2003 GMC Sierra 2500 HD Electrical Parts?
Electrical Part prices for the 2003 GMC Sierra 2500 HD start at $5.29 and go up to $419.99 for the most premium parts.
What’s the average price of a Electrical Part for a 2003 GMC Sierra 2500 HD?
The average price for Electrical Parts for the 2003 GMC Sierra 2500 HD is $69.75. Keep in mind the variety of part types within our Electrical Part category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Electrical Parts for other GMC Sierra 2500 HD model years?
What are the cheapest Electrical Parts for my 2003 GMC Sierra 2500 HD?
The cheapest 2003 GMC Sierra 2500 HD Electrical Parts we carry in stock are:
- Dorman – Help Plug Retainer, 57020 (11236154) – $5.29
- Carquest Multi-Use Connector, PTA1004 (12444442) – $11.99
- Carquest Multi-Use Connector, PTA1326 (12447269) – $12.99
- Carquest Multi-Use Connector, PTA1007 (12443212) – $19.99
- Carquest Multi-Use Connector, PTA1044 (12472958) – $19.99
What are the top-rated Electrical Parts that fit the 2003 GMC Sierra 2500 HD?
Out of 3,524 reviews by customers, our 2003 GMC Sierra 2500 HD Electrical Parts have an average customer rating of . These are some of the highest-rated Electrical Part types for the 2003 GMC Sierra 2500 HD and their top-rated products:
- Electrical Motors
- Dorman Power Window Regulator and Motor Assembly (OE Fix), 741-579 (15160144) – $89.99
- Dorman Power Window Lift Motor, 742-122 (22149259) – $56.99
- Dorman Power Window Lift Motor, 742-123 (22149260) – $61.99
What types of Electrical Parts do you sell for my 2003 GMC Sierra 2500 HD?
As of 8/2/26, these are some of the most in-demand types of Electrical Parts for a 2003 GMC Sierra 2500 HD:
Can I get help with 2003 GMC Sierra 2500 HD Electrical Part orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about GMC Electrical Parts and more.
What is your return policy for GMC Sierra 2500 HD Electrical Parts?
Advance Auto Parts keeps returns simple. For new GMC Sierra 2500 HD Electrical Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
