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

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Nick F.

6/7/2020

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

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Chris R.

6/11/2020

Can you tell me the model year of your Sierra?

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Terry P.

7/25/2021

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

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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.

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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…

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Answer 2

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

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Answer 3

Sometimes the fuses are already installed from the factory, but if not the fuse slots are in the front of the box. I have attached a picture that shows the location of fuse slots. I have also linked a video installation of a brake controller on a…

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Answer 4

A brake actuator with a manual lockout, like part #T63FR, will have a lockout lever on the actuator that prevents the internal spring and shock from engaging the master cylinder when backing up (see photo). A no lockout brake actuator, like part…

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Answer 5

If the 12-volt pin on your trailer connector isn't working, you've got a missing or blown fuse or the wiring connection at the fuse box under the hood wasn't finalized. You're looking for a 40 amp fuse, located in…

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Answer 6

Yes, trailer running lights and parking lights are the same circuit. So on a vehicle when you turn the headlights on there's the position on the selector right before you get to the headlights where all of the exterior lights of the vehicle…

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Answer 7

If you are looking for the fuses on your 2015 Chevrolet Silverado 1500 that are tied to your trailer wiring then those will be in the fuse box in the engine compartment. You can find this information as well as a list of what all the fuses are tied…

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Answer 8

On a factory 7-Way connector the 12 volt hot wire should be the terminal at the 1 oclock position, looking at the front of the connector. If you test that terminal with a circuit tester and have no power you will want to check under the hood of…

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Answer 9

On GM vehicles of that vintage, the 12-V pin should be hot regardless of whether the ignition is on or not. If it isn't showing voltage even with the ignition on, you're almost certainly on the right track thinking it's a…

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Answer 10

You are correct, you should only be getting output when the brake is applied, or the override switch is activated. It sounds like the controller might be bad, but to make sure, you should probably bench test it before tossing it. Use a circuit…

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Answer 11

It sounds like you're looking for the fuse that controls the 12v power to your 7 way connector. The fuse for the 12v power on a 2007 Chevy Silverado (New Body Style) is located at the front of the power distribution box under the hood of…

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Answer 12

I would start troubleshooting at the connector itself. Take the connection apart and make sure there are no bent pins or corroded terminals that could cause the tail light function not to work. Next, I would check the fuse block under the hood of…

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Fuse Locations for Trailer Lights on 2008 GMC Sierra

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