Troubleshooting 2000 GMC Sierra 1500 Wiring Functions
Question:
Hello, I followed a 2002 Chevy Silverado wiring diagram for my 2000 GMC Sierra and the passenger tail light will stay on, the driver tail light will not turn on, and the drivers side light will blink for both right and left turn signals.
asked by: Greg D
Expert Reply:
You will need to wire the Pollak 7-Pole and 4-Pole Trailer Connector Sockets, # HM40975-11998, for function rather than by color. Wiring color is not an exact science. A company may change wiring color even within the same model year. The best way to determine functions of your wires is to test them for function with a circuit tester, like part # PTW2993.
To test the wires using a circuit tester, first turn on the left blinker. Find the wire that carries a signal in unison with the blinker. This is your left turn signal wire. Next, do the same with the right blinker. Then, find the wire that has a constant signal when the lights are on. This is your running light wire. Do not confuse it with the 12-volt hot wire which will have a constant signal when the lights are off.
With the vehicle in reverse (best to have a helper in the vehicle applying the brake while it is in reverse, and engage the emergency brake) find the wire that has a constant signal. This is your reverse circuit. The last wire is for the electric brakes. If you have a brake controller installed, have someone engage the manual override on the brake controller. Then find the wire that carries a signal when the brake controller is engaged. The remaining wire is the ground.
Once you know the functions you can use the wiring configuration at right to help you wire your vehicle.
I have also included a link to trailer wiring diagrams for you to check out.
Products Referenced in This Question
Product Page this Question was Asked From
7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- No Converter
- Custom Fit
- 4 Flat
- 7 Round - Blade
- Hopkins
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Search Results: 8~173~16uc3
- Search Results: akebrk~2
- Search Results: bk1~100
- Search Results: e99011
- Shop: Trailer Wiring
- Search Results: 337tc1474p
- Video: etrailer 7 Way Upgrade Kit With Junction Box Installation
- Shop: Dexter Trailer Hub and Drum Assembly for 2,200-lb E-Z Lube Axles - 7" Diameter - 4 on 4
- Shop: Dexter Trailer Hub and Drum Assembly for 2,200-lb Axles - 7" Diameter - 4 on 4
- Shop: etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector
- Search Results: tekonsha 9030 brake controller
- Search Results: 3025p
- Article: Types of Bumpers
- Article: Brake Controller Installation: Starting from Scratch
- Article: How to Install a Brake Controller on Chevrolet / GMC 1999-2006 Pickups
- Shop: Bumpers
- Shop: Brake Controller
- Article: Trailer Wiring Diagrams
- Q&A: How to Wire a 2000 Chevy Silverado for Hauling a Trailer with a Brake Controller
- Q&A: What Trailer Weight Requires Brakes
- Q&A: Brake Controller Port Location for a 2000 GMC Sierra Pickup
- Q&A: Wiring Colors On 2000 GMC Sierra When Installing 7-way Trailer Connector
- Q&A: How to Activate the Factory Trailer Towing Package on a 2000 Chevy Silverado
- Video: Breaking Down the etrailer Electric Trailer Brakes
- Video: Installation: Pollak Replacement 7-Pole, RV-Style Trailer Connector Socket on a 2000 Ford Expedition
- Video: Mount: Tekonsha Voyager Trailer Brake Controller on a 2000 Chevrolet Silverado
- Video: Breaking Down the Fusion LED Trailer Tail Light
- Video: Deka Jacketed 2 Wire, 10 Gauge, Brake Wire Feature Review
- Video: Comprehensive Review: Hopkins 7-Way Blade Style Connector with Molded Cable
- Shop: Buyers Products Trailer Connector Adapter - 4-Way to 7-Way RV and 4-Way Flat
on Custom Fit Vehicle Wiring
