2003 GMC Sierra 2500 HD Electrical Connectors

Essential 2003 GMC Sierra 2500 HD Electrical Connectors

Carquest Premium – Rain Sensor Connector (Part No.PTA2314)

Rain Sensor Connector

from

$35.99
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 – 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

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
See More

Carquest Premium – Inline Connector (Part No.PTA2437)

Inline Connector

from

$27.99
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 – 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.
See More

Carquest Premium – Fog Light Connector (Part No.PTA1004)

Fog Light Connector

from

$11.49
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 Premium – Air Charge Temperature Sensor Connector (Part No.PTA3123)

Air Charge Temperature Sensor Connector

from

$123.99
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.
See More

Carquest Premium – Inline Connector (Part No.PTA1493)

Inline Connector

from

$42.99
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 – 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
See More

Carquest – Engine Oil Pressure Sensor (Part No.59C1004)

Engine Oil Pressure Sensor

from

$55.99
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. Carquest oil pressure sensors and switches 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.

Product Features:
  • Long service life and durable performance
  • 100% tested for proper performance
  • O-rings, seals or thread sealant are included if required
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
See More

Carquest Premium – Inline Connector (Part No.PTA2357)

Inline Connector

from

$119.99
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 – 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

Carquest Premium – Engine Crankshaft Position Sensor Connector (Part No.PTA1591)

Engine Crankshaft Position Sensor Connector

from

$63.99
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.
See More

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.
See More

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
See More

Carquest Premium – ABS Wheel Speed Sensor Connector (Part No.PTA1003)

ABS Wheel Speed Sensor Connector

from

$22.99
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 – 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.
See More

Carquest Premium – Repair Harness (Part No.PTA1536)

Repair Harness

from

$51.99
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.
See More

Dorman – Cam, Crank, Mass Air Flow Sensor Connector (Part No.645-785)

Cam, Crank, Mass Air Flow Sensor Connector

from

$37.99
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
See More

Carquest Premium – Inline Connector (Part No.PTA2149)

Inline Connector

from

$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.
See More

Carquest Premium – Distributor Ignition Pickup Connector (Part No.PTA1044)

Distributor Ignition Pickup 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 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
See More

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
See More

Putco – Tailgate Wiring Harness (Part No.529005)

Tailgate Wiring Harness

from

$101.99
Putco Blade LED light bar Quick Connect is constructed out of heavy-duty 16 gauge 100 Percent copper trailer wire. This quick connect is custom designed to make installing your Putco Blade simple. Installing your Blade LED with the plug-n-play Quick will drop your install time from hours to minutes. This eliminates the possibility of install error significantly. Our Quick Connect keeps factory wiring intact to eliminate issues with your vehicle factory warranty.

Product Features:
  • Trouble Free Connection: Eliminates Issues Of Connecting To The Trailering Electrical System By Connecting Into The Tail-Lamps While Keeping Your OEM Connections Intact
  • Provides An Additional 4-Pin Connector For Your Blade (TM) Or Red Blade (TM) Allowing You To Use Your OEM 4-Pin Connector When Needed
  • Plug And Play, No Cutting Or Splicing Your Factory Wires On Your Vehicle
  • Quick Connect Design, Heavy-Duty 16 Gauge, 100 Percent Copper Trailering Wire
  • Cuts Installation Time Into Just A Few Quick Minutes
See More

Carquest Premium – Communication Interface Module Connector (Part No.PTA2465)

Communication Interface Module Connector

from

$99.99
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 – Multi Purpose Connector (Part No.PTA3093)

Multi Purpose Connector

from

$55.99
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.
See More

Factory Air – Harness Connector (Part No.37231)

Harness Connector

from

$26.99
OE style connectors; Molded plastic construction; Quality contacts ensure proper conductivity; Universal applications
See More

Carquest Premium – Multi Purpose Connector (Part No.PTA2919)

Multi Purpose Connector

from

$56.99
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.
See More

2003 GMC Sierra 2500 HD Electrical Connectors

Maybe you’re in the middle of a full rebuild of that 2003 GMC Sierra 2500 HD. Maybe you just need a couple of Electrical Connectors. Either way, Advance Auto Parts has 60 different Electrical Connectors in our inventory ranging from $11.49 to $395.99. That means you can find the exact parts or products you need to keep that 2003 GMC Sierra 2500 HD running smoothly.

Electrical Connectors are only as good as their brand. We stock 4 different brands to make sure you have plenty of trusted parts to choose from for your 2003 GMC Sierra 2500 HD. Carquest, Carquest Premium, and Dorman are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Electrical Connectors for your 2003 GMC Sierra 2500 HD, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 940 reviews in this category, some of the top rated parts include Engine Crankshaft Position Sensor Connector with 5.0 stars and GM Multi-Purpose Connector with 5.0 stars.

So if you’re in the market for aftermarket Electrical Connectors to keep your 2003 GMC Sierra 2500 HD rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Electrical Connectors Brands To Make Your 2003 GMC Sierra 2500 HD Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2003 GMC Sierra 2500 HD demands trusted brand parts and products to keep it running. Many trusted brands of Electrical Connectors make up Advance Auto Parts’ inventory, and all are ready to help make your Sierra 2500 HD the best it can be. Be sure to browse some of our top Electrical Connectors brands and parts.

Popular ACDelco Electrical Connectors

We carry ACDelco parts in our stock across Side Marker Lamp Connectors categories, plus more. For a 2003 GMC Sierra 2500 HD, our most popular ACDelco Electrical Connectors include:
Gray Multi-Purpose Lamp Socket
from $58.99
(1)
Gray Multi-Purpose Lamp Socket
Side Marker Lamp Connectors

Top 2003 GMC Sierra 2500 HD Electrical Connectors from Carquest

Carquest products are another trusted brand when it comes to Electrical Connectors for your 2003 GMC Sierra 2500 HD. Popular Carquest parts include:
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
Back Up Light Connector
from $26.05
(1)
Back Up Light Connector
Fog Light Connectors

FAQs for 2003 GMC Sierra 2500 HD Electrical Connectors

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

Out of 60 Electrical Connectors for the 2003 GMC Sierra 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 Sensor
from $61.99
This product is not rated
Engine Oil Pressure Sensor
Oil Pressure Switch and Senders
Engine Oil Pressure Sensor With Filter
from $57.99
This product is not rated
Engine Oil Pressure Sensor With Filter
Oil Pressure Switch and Senders

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

Top-rated Electrical Connectors for your 2003 GMC Sierra 2500 HD based on customer reviews/ratings are:
Engine Crankshaft Position Sensor Connector
from $67.99
(1)
Engine Crankshaft Position Sensor Connector
“Crankshaft position sensor works perfectly on my car”
GM Multi-Purpose Connector
from $35.99
(1)
GM Multi-Purpose Connector
“Great looking product but couldn’t use it because I needed a 4 prong one. I didn’t like the high price but speed perks and discounts made it affordabl”