2003 GMC Sierra 2500 HD Electrical Parts

Essential 2003 GMC Sierra 2500 HD Electrical Parts

Dorman – Front Impact Sensor (Part No.590-223)

Front Impact Sensor

from

$211.99
This air bag impact sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this air bag impact sensor is designed to match the fit and function of the original sensor on specified vehicles
  • Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
  • Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest Premium – Multi Purpose Connector (Part No.PTA2945)

Multi Purpose Connector

from

$101.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest Premium – Body Wiring Harness Connector (Part No.PTA2051)

Body Wiring Harness Connector

from

$38.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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ACDelco – Gray Multi-Purpose Pigtail (Part No.PT2206)

Gray Multi-Purpose Pigtail

from

$87.99
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.

Product Features:
  • Protective outer coverings help provide long-lasting durability
  • Color-coded wires allow for easy installation
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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Dorman – Impact Sensor (Part No.590-271)

Impact Sensor

from

$131.99
This air bag impact sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this air bag impact sensor is designed to match the fit and function of the original sensor on specified vehicles
  • Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
  • Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Carquest Premium – Instrument Panel Wiring Junction Block Connector (Part No.PTC2397)

Instrument Panel Wiring Junction Block Connector

from

$141.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Carquest Premium – Cargo Area Light Connector (Part No.PTA1383)

Cargo Area Light Connector

from

$40.99
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.

Product Features:
  • CarQuest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
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ACDelco – Multi-Purpose Pigtail (Part No.PT2882)

Multi-Purpose Pigtail

from

$69.99
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.

Product Features:
  • Protective outer coverings help provide long-lasting durability
  • Color-coded wires allow for easy installation
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
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ATP – Repair Harness (Part No.JE-34)

Repair Harness

from

$167.99
Repair Harness

Carquest Premium – 4WD Indicator Light Switch Connector (Part No.PTA1174)

4WD Indicator Light Switch Connector

from

$35.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Dorman – Help – Plug Retainer (Part No.57020)

Plug Retainer

from

$4.99
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.

Product Features:
  • Direct replacement – this 12 volt accessory power outlet cover is designed to match the fit, appearance and function of the original cover on specified vehicles
  • Restores functionality – this cover is made to fully restore appearance and functionality after the original part fails
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Dorman – Splash Shield Retainer – GM/Ford/Chrysler (sold by each) (Part No.700-397)

Splash Shield Retainer - GM/Ford/Chrysler (sold by each)

from

$1.29
Constructed of quality materials, this multi-purpose retainer provides the same function and versatility as the original equipment retainer ensuring long service life.

Product Features:
  • Ideal replacement – this retainer matches the fit and function of the original equipment retainer for this vehicle application
  • Quality material – this retainer is made of durable material for long-lasting service
  • Versatile design – this retainer is suitable for a variety of automotive uses
  • Excellent value – this part offers original equipment quality at a competitive cost
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ACDelco – Multi-Purpose Wire Connector with Leads (Part No.PT2319)

Multi-Purpose Wire Connector with Leads

from

$53.99
ACDelco Professional Throttle Position Sensor Connector is a high quality aftermarket replacement component for one or more of the following vehicle systems: ignition, starting and charging, body-electrical and lighting, and/or engine fuel management. This premium aftermarket connector is manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
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Carquest – RELAY – ACCESSORY (Part No.R3115)

RELAY - ACCESSORY

from

$27.49
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.

Product Features:
  • Our units are all pre-aligned & pre-adjusted to save installation time and ensure proper switching.
  • A lubricated felt pad that lubricates the cam lobes on the vehicles distributor. This reduces wear on the point set rubbing block, extending the usable life of the part.
  • Ventilated where available, tungsten contacts, which run cooler and exhibit less erosion.
  • The copper-alloy shunt provides superior resistance to breakage, due to the flexing of the moving arm on the point set. It also significantly increases current conductivity over typical steel, shunts.
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Carquest – Engine Camshaft Position Sensor Connector (Part No.PT196)

Engine Camshaft Position Sensor Connector

from

$35.99
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.

Product Features:
  • Our control modules feature double wire bonds for better connections, greater dependability and longer life despite being subjected to intense vibration and the tough operating environment
  • Copper slug heat sinks provide better heat dissipation to prevent heat from damaging the module
  • Our ignition modules will respond to a weak signal from the crankshaft position sensor and begin energizing the coils immediately for better starts in cold weather
  • High-temperature polymer housing reducing moisture intrusion and minimizes vibration damage for extended life and improved reliability
  • Our ignition modules are durability tested for 500 thermal cycles ranging from -40C to +125C
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TSK – Window Regulator w/ (Part No.O30522533282TSK)

Window Regulator w/

from

$281.75
Window Regulator w/

Carquest Premium – Ignition Knock (Detonation) Sensor Connector (Part No.PTA1193)

Ignition Knock (Detonation) Sensor Connector

from

$17.79
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

ACDelco – Multi-Purpose Pigtail (Part No.PT3215)

Multi-Purpose Pigtail

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.

Product Features:
  • Protective outer coverings help provide long-lasting durability
  • Color-coded wires allow for easy installation
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
See More

Carquest Premium – Vapor Canister Purge Solenoid Connector (Part No.PTA1093)

Vapor Canister Purge Solenoid Connector

from

$23.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

ACDelco – 7-Way Female Gray Multi-Purpose Pigtail (Part No.PT1391)

7-Way Female Gray Multi-Purpose Pigtail

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.

Product Features:
  • Protective outer coverings help provide long-lasting durability
  • Color-coded wires allow for easy installation
  • GM-recommended replacement part for your GM vehicle’s original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function
See More

Carquest – A/C Compressor Connector (Part No.PT770)

A/C Compressor Connector

from

$16.05
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.

Product Features:
  • Our knock sensors are designed to respond to knock frequencies up to 1000 Hz accommodating shifts in engine knock frequency making it a more flexible sensor responding to correct engine knock over a broad range of vehicle conditions
  • Manufacturing processes include an automated data acquisition system to continuously monitor the sensor output to ensure that it responds with appropriate voltage output at the specified frequency range
  • All units are 100% tested using an accelerometer vibration test to ensure trouble-free operation
  • Featuring the broadest sensor coverage in the market, we meet the service professionals needs with the highest quality product every time he opens the box
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
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Carquest Premium – Air Charge Temperature Sensor Connector (Part No.PTA1129)

Air Charge Temperature Sensor Connector

from

$52.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest Premium – Accessory Wiring Junction Block Connector (Part No.PTA2478)

Accessory Wiring Junction Block Connector

from

$44.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest Premium – Inline Connector (Part No.PTA2112)

Inline Connector

from

$23.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest Premium – Fuel Pump Wiring Harness (Part No.WH3009)

Fuel Pump Wiring Harness

from

$14.99
CARQUEST wiring harnesses are designed to replace worn, damaged, or corroded electrical connections, delivering reliable performance and long life.

Product Features:
  • Provides worry-free electrical performance
  • Designed to meet or exceed OE specifications
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Carquest Premium – Headlight Switch Connector (Part No.PTA1691)

Headlight Switch Connector

from

$54.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest Premium – ABS Wheel Speed Sensor Connector (Part No.PTA1078)

ABS Wheel Speed Sensor Connector

from

$27.49
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest – Air Charge Temperature Sensor Connector (Part No.PT191)

Air Charge Temperature Sensor Connector

from

$11.49
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.

Product Features:
  • Our control modules feature double wire bonds for better connections, greater dependability and longer life despite being subjected to intense vibration and the tough operating environment
  • Copper slug heat sinks provide better heat dissipation to prevent heat from damaging the module
  • Our ignition modules will respond to a weak signal from the crankshaft position sensor and begin energizing the coils immediately for better starts in cold weather
  • High-temperature polymer housing reducing moisture intrusion and minimizes vibration damage for extended life and improved reliability
  • Our ignition modules are durability tested for 500 thermal cycles ranging from -40C to +125C
See More

Popular 2003 GMC Sierra 2500 HD Electrical Parts Categories

2003 GMC Sierra 2500 HD Electrical Parts

You count on your 2003 GMC Sierra 2500 HD to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Electrical Parts. With 124 Electrical Parts ranging in price from $1.29 to $673.99, you’re sure to find everything you need for your 2003 GMC Sierra 2500 HD.

Brands matter. If you want to shop a specific Electrical Parts brand, we stock 12 different brands like Dorman, Carquest, and Carquest Premium. 2003 GMC Sierra 2500 HD Electrical Parts start as low as $1.29!

One of the best ways to find top quality OEM or aftermarket Electrical Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 6,600 extensive product reviews on 2003 GMC Sierra 2500 HD Electrical Parts. Some of the top-rated Electrical Parts products we carry are Engine Oil Pressure Switch with 4.3 stars and Air Charge Temperature Sensor Connector with 3.9 stars.

Did we mention you can order your Electrical Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Electrical Parts inventory for your 2003 GMC Sierra 2500 HD below to get started!

Top-Rated Electrical Parts Brands For Your 2003 GMC Sierra 2500 HD

Trusted Electrical Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 GMC Sierra 2500 HD running right for years to come. In our inventory you’ll find brands like Dorman, Carquest, Carquest Premium, and even more.

Popular Carquest Premium Electrical Parts

You’ll find popular Carquest Premium brand products across Engine Wiring Harnesses. All are waiting to get your 2003 GMC Sierra 2500 HD back on the road. Some of the top-rated Carquest Premium products in these categories are:
Fuel Pump Wiring Harness
from $14.99
(1)
Fuel Pump Wiring Harness
Fuel Pump Wiring Harness

FAQs for 2003 GMC Sierra 2500 HD Electrical Parts

What are the most purchased Electrical Parts for the 2003 GMC Sierra 2500 HD?

Out of 124 Electrical Parts for the 2003 GMC Sierra 2500 HD, the most popular in our inventory are:
Engine Oil Pressure Sensor
from $83.99
This product is not rated
Engine Oil Pressure Sensor
Oil Pressure Switch and Senders
Engine Oil Pressure Sensor
from $77.99
This product is not rated
Engine Oil Pressure Sensor
Oil Pressure Switch and Senders
Cornering Light Socket
from $23.29
(26)
Cornering Light Socket
Crankshaft Position Sensor Connectors

What are the top-rated 2003 GMC Sierra 2500 HD Electrical Parts?

Top-rated Electrical Parts for your 2003 GMC Sierra 2500 HD based on customer reviews/ratings are:
Engine Oil Pressure Switch
from $78.99
(44)
Engine Oil Pressure Switch
“GREAT”
Air Charge Temperature Sensor Connector
from $11.49
(33)
Air Charge Temperature Sensor Connector
“It fit works!!!!”
Power Window Lift Motor
from $47.99
(6)
Power Window Lift Motor
“Worked great and website was very accurate.”