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GMC SIERRA 2500 HD CLASSIC Electrical Wiring
Showing In Stock Items. Show All 67 Items.
Painless Performance GM Gen IV Vortec Truck Engine Wiring Harnesses
Painless Performance GM Gen IV Vortec truck engine wiring harnesses are designed to operate any Chevrolet Gen IV engine coupled with a 4L65E, 4L70E, 4L80E, or 4L85E automatic transmission. They cannot be used with a 4L60E transmission because it's missing the input speed sensor required by the transmission control module. The harnesses support engines with or without cylinder deactivation and/or variable valve timing. They feature an integrated weatherproof fuse block. Painless Performance GM Gen IV Vortec truck engine wiring harnesses have 10 fused power circuits, including injectors, ignition coils, oxygen sensors, ECM ignition, MAF/VLOM, and fuel pump. They also use an integrated 30 amp fuel pump, 40 amp cooling fan relays, and two ignition relays. The harnesses have an extra 4 ft. of length between the ECM connections and the main engine breakout.
( 1 )
$830.99
ACDelco Wiring Connectors
The average vehicle today has hundreds of wiring connectors. ACDelco connectors are available for everything needed, from antennas to trailer wiring, as well as an array of multi-purpose connectors to maintain the optimal operation of your vehicle. Choose GM-recommended replacement wiring connectors to ensure the same performance, durability, and service life you've come to expect from General Motors products.
( 38 )
$18.99
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$45.99
ACDelco Replacement Wiring Harness Connectors
When you need to make automotive repairs, ACDelco's selection of replacement wiring harness connectors offers you the best fit and function sockets and pigtails to do a variety of jobs. These quality-built, OE-like connectors and adapters provide you with efficient, less costly repair options for GM and American Motors vehicles. They're available in male or female, with an assortment of pins/cavities to fill your needs. Service your vehicle with a name you know and trust--ACDelco.
( 22 )
$21.99
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$48.99
Fleece Performance Wiring Pigtails
Fleece Performance offers wiring pigtails and replacement connectors for a wide range of vehicles—including many Dodge, Chevrolet, GMC, Ford, and Ram models from the 1990s and up. These replacement parts are ideal for sensors, starter solenoids, cooling fans, and other components under the hood. Fully automated in-house wire cutting and terminal crimping ensure you get the highest quality connectors and pigtails to get your car or truck back on the road quickly. Order the model that corresponds to your electrical application.
( 4 )
$14.99
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$37.99
Pacer Performance LED Modules
These Pacer Performance LED logic modules filter out turn signal input on all vehicles that use combined brake and turn signal lamps. These modules are required when using a single light as a third LED brake light. Works on most domestic models.
( 11 )
$15.99
Dorman Power Window Switches
Dorman power window switches are high-quality replacements to facilitate the ups-and-downs of window operation. They're designed to meet all OEM specifications and install in the stock location. Dozens of styles are available for fitment in specific vehicles.
( 77 )
$79.95
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$220.95
Standard Motor Wiring Connectors
High-quality, direct-replacement Standard Motor wiring connectors help eliminate the need for a harness by letting you swap only the damaged connector for a cost-effective repair solution. The terminals feature high-grade materials like copper alloy, brass, and phosphor bronze. Together they provide the connectors with prolonged life and superior performance in harsh environments for each specific application. Standard Motor electrical connectors are 100 percent tested for the proper mechanical and electrical fit, form, and function for your vehicle.
( 142 )
$5.99
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$171.99
ACDelco Gold Headlight Switches
ACDelco Gold headlight switches are high-quality replacements for many vehicles on the road today. They allow you to activate your parking lights and headlights. These premium aftermarket switches are manufactured to meet your expectations for fit and performance.
( 2 )
$58.99
ACDelco GM Genuine Parts Ground Straps and Cables
ACDelco GM Genuine Parts ground straps and cable are factory-recommended replacements for one or more of the following vehicle systems: ignition, starting and charging, body-electrical and lighting, and/or engine fuel management. These various straps and cables will provide the same performance, durability, and service life you expect from General Motors. Order the model designed for your application.
( 3 )
$15.99
ACDelco Replacement Relays
Don't take chances with old or questionable relays that can leave you stranded. ACDelco replacement relays are designed to exceed OEM specifications for accurate, maintenance-free operation. Trust your vehicle's needs to ACDelco.
( 16 )
$7.99
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$44.99
Standard Motor Power Window Switches
Standard Motor Products offers a full line of these replacement switches for your power windows. You can count on Standard Motor Products for the replacement parts that you need.
( 38 )
$146.99
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$220.99
Dorman Headlight Switches
Dorman headlight switches are designed to give you durable replacement switches that are built to last. These push/pull switches allow you to light up the night with confidence, knowing that you can count on Dorman quality.
( 5 )
$44.99
ACDelco GM Genuine Parts HVAC Blower Control Modules
ACDelco GM Genuine Parts HVAC blower control modules manage the temperature, air distribution, blower fan, and air conditioning functions in automatic climate control systems, and they are GM-recommended replacements for your vehicle's original component. These original equipment HVAC control modules have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
( 4 )
$78.99
Dorman Blower Motor Resistors
Weather forecasts change daily, but your vehicle is still one place where you can control the climate. And that's why Dorman blower motor resistors are so important. The easy-to-install devices control the electric current to the fan motor, keeping your heating and air conditioning system at peak performance, no matter the speed. Their long-lasting design resists thermal fuse failure, overheating, and burnout. These components are available for fitment in a wide range of cars, trucks, and vans.
( 21 )
$33.99
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$64.99
ACDelco GM Genuine Parts HVAC Blower Motor Resistors
ACDelco GM Genuine Parts HVAC blower motor resistors provide stepped voltage drops to facilitate multiple blower fan speeds. They're GM-recommended replacements for your vehicle's factory component and they are manufactured to deliver the performance, durability, and service life you expect from General Motors. Order the model designed for your vehicle and engine application.
( 3 )
$54.99
Standard Motor Blower Motor Resistors
Don't take chances with old, questionable, or faulty blower motor resistors that can leave you without heat or air circulation. Standard Motor Products blower motor resistors will control the electrical current flowing from the fan switch to the blower fan, allowing you to set the fan at different speeds. They are designed to exceed OEM specifications for dependable, maintenance-free operation. Restore your vehicle's HVAC functions with high-quality replacement parts from Standard Motor.
( 33 )
$46.99
ATP Automatic Transmission Wiring Harnesses
ATP Automotive provides one of the widest product offerings of automatic gear-shifting control products, including transmission wiring harnesses, for most import and domestic vehicles. ATP designs and manufactures them to meet or exceed the OEM specifications to properly control your drivetrain. Get exact-fit, no-compromise replacement parts when you order the ATP automatic transmission wiring harnesses designed for your application.
( 1 )
$37.99
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$157.99
ACDelco Replacement Switches
ACDelco offers various electrical switches—including door lock, turn signal, ignition, trunk, HVAC, sensors, dimmers, brake lights, windshield wipers, and more for most vehicles on the road today. These replacements are manufactured to original equipment specifications to ensure proper fitment and performance. Order the switches recommended for your applications.
( 61 )
$39.99
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$52.99
Dorman Turn Signal Switches
Dorman offers a wide variety of direct-replacement turn signal switches. They are critical replacement items for safety and are essential for passing state inspections. Dorman turn signal switches are plug-and-play for easy installation and are all quality-tested for trouble-free performance.
( 7 )
$79.99
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$99.99
Nitrous Express NX Accessory Power Switch Panels
These Nitrous Express NX accessory power switch panels offer a clean and attractive solution for nitrous systems. These switch panels feature laser etched switch labels for a truly professional look!
( 7 )
$76.43
Dorman Ignition Switches
Essential replacement items, Dorman ignition switches enable engines to turn over upon startup, restoring drivability. They also unlock the power accessories. These switches are engineered from high-quality materials for long lasting reliability. Features include: * These parts undergo rigorous quality inspection to ensure high quality * Where applicable, includes bezel for a complete repair * Easy to install * Direct replacement for a proper fit
( 10 )
$21.99
Fleece Performance Wiring Harness Extensions
Gain additional flexibility in your harness routings with Fleece Performance extension harnesses. Produced in-house, Fleece's manufacturing process includes fully automated wire cutting and terminal crimping to ensure you get the highest quality replacement parts you need to get your vehicle back on the road quickly. Choose the harness needed for your wiring application.
Not Yet Reviewed
$40.99
Bosch Relays
Plug in Bosch relays for your vehicle's power-switching needs. These quality-built relays exceed OEM specifications to provide reliable service for a wide variety of applications. You can trust Bosch for all of your automotive electrical needs. Features include: * Built to withstand extreme conditions * High-power switching * Function over a wide temperature range * Excellent vibration and impact resistance * Long service life and good climatic resistance
( 40 )
$2.99
Dorman Ignition Key Lock Cylinders
Don't take chances with old, questionable, or malfunctioning ignition lock cylinders that can leave you stranded. Dorman replacement ignition lock cylinders and keys are designed to exceed OEM specifications for reliable, maintenance-free operation.
( 13 )
$41.99
