Fuse Locations for Trailer Lights on 2008 GMC Sierra

Question

Question:

Where is the fuse for the lights for a trailer on a 2008 GMC Seirra?

asked by: Jenny

0

Expert Reply:

Trailer fuses are found in the underhood fuse block. Fuse 1 is your trailer Right stop/turn lamp. Fuse 3 is your Left stop/turn lamp. Fuse 10 is your trailer backup lamps. Fuse 25 is your trailer park lamps.

If you don't want to pull the fuses, you can use a circuit tester like # PTW2993 to check the poles of your fuses on the top for power transfer.

expert reply by: Jason S

0

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Nick F.

6/7/2020

Where are the fuses for the trailer lights on gmc 2500 hd duramax?

Chris R.

6/11/2020

Can you tell me the model year of your Sierra?

Terry P.

7/25/2021

@ChrisR my trailer lights are not coming on …we’re the fuses located??

Victoria B.

7/27/2021

Can you let us know the year, make, and model of your tow vehicle? Fuse locations are sometimes charted on the inside of the fuse box lid or are otherwise listed in the vehicle owner's manual.

Answer 1

From what I found you're looking for fuse #25 in the underhood fuse block. It's labeled "Trailer Park Lamps". If that doesn't fix it clean the trailer connectors on your truck and trailer and make sure they're clean. The…

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Answer 2

For your Glo-Brite 118A amber light the replacement lens that will fit is the Optronics #A44AB; the lights themselves are the Optronics #MC44AB. The Glo-Brite 117R can use replacement lens #A44RB while the light is #MC44RB. I've added links to…

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Answer 3

You will first want to check the fuses on your tow vehicle. Some vehicles could have fuses for operating the turn signals and brake lights of a towing package. You will want to check if they are installed and working properly. The next thing is to…

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Answer 4

It sounds like the P2, item #90885, is not properly connected to the vehicle stop light switch. Since the brake controller has power and the trailer brakes work properly when the manual lever is activated, the black, blue, and white wires are…

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Answer 5

The wires exiting the rear of your controller serve the following functions. The blue wires carries the brake output from the controller, the white wire is the ground, the black wire supplies 12 Volt power, and the red wire is tied into the vehicle…

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Answer 6

If the vehicle has the factory installed integrated trailer brake controller (ITBC), the tow package wiring that exists under the dash is used to install an aftermarket controller. The wiring is located under the dash, above where the driver's…

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Answer 7

Wire colors alone are not a reliable method for connecting vehicle or trailer wiring since they are not always consistently used. There are common wire colors for certain functions, such as a brown wire for trailer running lights, but there is no…

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Answer 8

Yes there will be a fuse that protects the 12 volt trailer accessory circuit of your 7-way wiring. If this is factory wiring of a truck you'll want to check out the fuse box diagram or the owners manual.

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Answer 9

There are a few troubleshooting steps to help you figure out why you have no power. I would start by making sure that there is not any corrosion or debris blocking your connection points. If they are clean or still no power after cleaning, I would…

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Answer 10

The NC on your Prodigy P2 #90885 means there is no trailer connection being recognized. Usually this is due to the controller not seeing enough power draw on the 5 o'clock pin of the 7-way (the brake controller output). This can be as basic as…

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Answer 11

To check the pins on the vehicle side 7-Way, you can use a circuit tester or the volt meter. The circuit tester will show you if a signal is coming through on the pin you are testing while the volt meter will tell you that and how much voltage is…

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Answer 12

The nc code on the Tekonsha Prodigy brake controller indicates that no trailer is connected. When you step on the brake pedal though it should still say that the trailer is not connected. It is possible that there is a short being caused by a dirty…

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Fuse Locations for Trailer Lights on 2008 GMC Sierra

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