2003 Chevrolet Silverado 2500 HD Electrical Parts

Essential 2003 Chevrolet Silverado 2500 HD Electrical Parts

Delphi – Fuel Pump Wiring Harness (Part No.FA10003)

Fuel Pump Wiring Harness

from

$17.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part, comprehensive portfolio for a wide range of vehicles and model years.

Product Features:
  • Each wire harness is designed to meet or exceed the performance of the original unit
  • Engineered with the same stringent standards applied to the parts we make for the top global OEMs
  • Delphi wire harnesses are designed and reliably work for the life of your fuel system
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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
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ACDelco – Black Multi-Purpose Pigtail (Part No.PT2712)

Black Multi-Purpose Pigtail

from

$34.99
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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Factory Air – Harness Connector (Part No.37231)

Harness Connector

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$26.99
OE style connectors; Molded plastic construction; Quality contacts ensure proper conductivity; Universal applications
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ACDelco – Blue Multi-Purpose Pigtail (Part No.PT2274)

Blue Multi-Purpose Pigtail

from

$76.99
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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Carquest – A/C Auto Temperature Control Relay (Part No.R3110)

A/C Auto Temperature Control Relay

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.

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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GM Genuine Parts – Multi-Purpose Relay (Part No.15-81106)

Multi-Purpose Relay

from

$32.99
GM Genuine Parts Wiring Relays are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These relays help connect or disconnect power to a vehicle accessory when it receives a low voltage signal from a switch. 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).

Product Features:
  • Helps connect or disconnect power to vehicle accessories
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Carquest Premium – Inline Connector (Part No.PTA2149)

Inline Connector

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$184.99
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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Littelfuse – Fuse – Maxi Blade 32V 60A: 60 Amp, Blue, Maxi, 1 Pack (Part No.MAX60)

Fuse - Maxi Blade 32V 60A: 60 Amp, Blue, Maxi, 1 Pack

from

$4.29
MAXI uses “Diffusion Pill Technology” to provide predictable time delay characteristic and low heat dissipation. MAXI Fuses are primarily used for under hood applications and are products with a high temperature polymer and silver plated blades. Replace commonly used fusible wire or fusible link to protect a high current segment or system of the wiring harness. Ideal for motor powered applications which have large inrush currents. Littelfuse, founded in 1927 and headquartered in Chicago, is an industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 15 countries, and with 17,000 global associates, we partner with customers to design and deliver innovative, reliable solutions.

Product Features:
  • MAXI uses “Diffusion Pill Technology” to provide predictable time delay characteristic and low heat dissipation
  • MAXI Fuses are primarily used for under hood applications and are products with a high temperature polymer and silver plated blades.
  • Replace commonly used fusible wire or fusible link to protect a high current segment or system of the wiring harness.
  • Ideal for motor powered applications which have large inrush currents.
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Carquest Premium – Anti-Theft Cut-Off Switch Connector (Part No.PTA3012)

Anti-Theft Cut-Off Switch Connector

from

$84.99
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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Dorman – 2 Wire Pigtail – Watertight Rectangular Female Connector With Female Terminals (Part No.645-106)

2 Wire Pigtail - Watertight Rectangular Female Connector With Female Terminals

from

$18.99
Make better electrical repairs and accessory installations with this pigtail connector. Designed for a clean appearance when installed, it features weatherproof terminals and a locking tab for a reliable quick disconnect electrical connection.

Product Features:
  • Professional appearance – this electrical pigtail is designed for a clean, professional look when installed
  • Convenient solution – this pigtail connector allows the circuit to be quickly disconnected for service or occasional use
  • Durable construction – this pigtail connector features weatherproof seals and a locking tab for a reliable connection
  • Versatile component – this connector can be used in a variety of repairs and custom installations
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ACDelco – Multi-Purpose Pigtail (Part No.PT2834)

Multi-Purpose Pigtail

from

$39.99
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 – Headlamp Socket (Part No.645-534)

Headlamp Socket

from

$49.99
This license plate light connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this license plate light connector matches the appearance and function of the factory hardware on specified applications
  • Ideal solution – this connector is a reliable replacement for an original part that is missing or has failed due to fatigue
  • 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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GM Genuine Parts – Ebony Cruise Control Switch (Part No.D1957E)

Ebony Cruise Control Switch

from

$62.99
GM Genuine Parts Cruise Control Switches are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These allow you to turn on and adjust the cruise control in your vehicle. 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).

Product Features:
  • Work with vehicle electronics to help optimize vehicle capabilities
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Collision parts are designed to help promote proper and safe repair
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Carquest Premium – Accessory Power Receptacle Connector (Part No.PTA1817)

Accessory Power Receptacle Connector

from

$24.99
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 – Multi-Purpose Pigtail (Part No.PT2296)

Multi-Purpose Pigtail

from

$73.99
ACDelco Professional Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are a high quality replacement for many vehicles on the road today. These premium aftermarket replacement components are manufactured to meet your expectations for fit, form, and function.

Product Features:
  • Protective outer coverings provide long-lasting durability
  • Color-coded wires allow for easy installation
  • Manufactured to meet expectations for fit, form, and function
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ACDelco – Oil Pressure Sender (Part No.P4030922030ACD)

Oil Pressure Sender

from

$87.78
Oil Pressure Sender

Carquest Premium – Inline Connector (Part No.PTA2305)

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
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ACDelco – Multi-Purpose Wire Connector with Leads (Part No.PT2386)

Multi-Purpose Wire Connector with Leads

from

$33.99
ACDelco Professional Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are a high quality replacement for many vehicles on the road today. These premium aftermarket replacement components are manufactured to meet your expectations for fit, form, and function.

Product Features:
  • Protective outer coverings provide long-lasting durability
  • Color-coded wires allow for easy installation
  • Manufactured to meet expectations for fit, form, and function
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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 Premium – Repair Harness (Part No.PTA2605)

Repair Harness

from

$61.99
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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Dorman – Impact Sensors- Front Bumper (Part No.590-205)

Impact Sensors- Front Bumper

from

$215.99
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 – 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
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Carquest – Back Up Light Connector (Part No.PT343)

Back Up Light Connector

from

$26.05
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 distributor caps are made of high dielectric strength, glass/mineral reinforced polyester resin for less carbon tracking, greater resistance to electrical breakdown, and superior performance
  • Solid brass terminals (where available) make better connections and greater resistance to electrical pitting and corrosion
  • RFI resistors where specified to eliminate radio static and potential ECU-damaging spikes
  • With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
  • 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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Dorman – Window Regulator & Motor Assembly: Power, 1 Pack (Part No.741-389)

Window Regulator & Motor Assembly: Power, 1 Pack

from

$76.99
This replacement power window motor and regulator assembly is precision-engineered and extensively tested to match the exact fit, function and performance of the stock window regulator on specific vehicle years, makes and models.

Product Features:
  • Trustworthy replacement – engineered and tested to match the fit, function and performance of the original window regulator on specified vehicles
  • Quality assured – extensively tested by cycling thousands of times in an actual vehicle door to ensure a long, trouble-free service life
  • Easy installation – reverse-engineered to match the original equipment shape and dimensions to provide a direct, seamless fit
  • Reliable design – engineered in North America and backed by long history of automotive aftermarket experience
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Carquest Premium – Fog Light Switch Connector (Part No.PTA2142)

Fog Light Switch Connector

from

$249.99
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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ACDelco – Gray Multi-Purpose Lamp Socket (Part No.LS44)

Gray Multi-Purpose Lamp Socket

from

$58.99
ACDelco GM Original Equipment Socket Assemblies securely hold interior and exterior light bulbs and provide the electrical connection required to operate the bulb, and are GM-recommended replacements for your vehicle’s original components. These original equipment socket assemblies have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Product Features:
  • Provides connection for light bulb contacts to operate bulb
  • 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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Carquest Premium – Cross Body Wiring Harness Connector (Part No.PTA2575)

Cross Body Wiring Harness Connector

from

$25.99
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

2003 Chevrolet Silverado 2500 HD Electrical Parts

You count on your 2003 Chevrolet Silverado 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 92 Electrical Parts ranging in price from $2.73 to $673.99, you’re sure to find everything you need for your 2003 Chevrolet Silverado 2500 HD.

Brands matter. If you want to shop a specific Electrical Parts brand, we stock 11 different brands like Dorman, Carquest, and Carquest Premium. 2003 Chevrolet Silverado 2500 HD Electrical Parts start as low as $2.73!

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 3,067 extensive product reviews on 2003 Chevrolet Silverado 2500 HD Electrical Parts. Some of the top-rated Electrical Parts products we carry are A/C Auto Temperature Control Relay with 5.0 stars and Multi Function Switch with 4.8 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 Chevrolet Silverado 2500 HD below to get started!

Top-Rated Electrical Parts Brands For Your 2003 Chevrolet Silverado 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 Chevrolet Silverado 2500 HD running right for years to come. In our inventory you’ll find brands like Dorman, Carquest, Carquest Premium, and even more.

Popular ACDelco Electrical Parts

You’ll find popular ACDelco brand products across Electrical Connectors. All are waiting to get your 2003 Chevrolet Silverado 2500 HD back on the road. Some of the top-rated ACDelco products in these categories are:
Gray Multi-Purpose Lamp Socket
from $58.99
(1)
Gray Multi-Purpose Lamp Socket
Side Marker Lamp Connectors

FAQs for 2003 Chevrolet Silverado 2500 HD Electrical Parts

What are the most purchased Electrical Parts for the 2003 Chevrolet Silverado 2500 HD?

Out of 92 Electrical Parts for the 2003 Chevrolet Silverado 2500 HD, the most popular in our inventory are:
Engine Oil Pressure Sensor
from $77.99
This product is not rated
Engine Oil Pressure Sensor
Oil Pressure Switch and Senders
Engine Oil Pressure Switch
from $78.99
(44)
Engine Oil Pressure Switch
Oil Pressure Switch and Senders
Air Charge Temperature Sensor Connector
from $11.49
(33)
Air Charge Temperature Sensor Connector
Crankshaft Position Sensor Connectors

What are the top-rated 2003 Chevrolet Silverado 2500 HD Electrical Parts?

Top-rated Electrical Parts for your 2003 Chevrolet Silverado 2500 HD based on customer reviews/ratings are:
A/C Auto Temperature Control Relay
from $20.99
(7)
A/C Auto Temperature Control Relay
“It is good”
Multi Function Switch
from $134.05
(6)
Multi Function Switch
“Part was as described and works great.”
Power Window Lift Motor
from $47.99
(6)
Power Window Lift Motor
“Worked great and website was very accurate.”