Question about 2003 GMC Envoy

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Gmc Envoy drivers side brake light dont work replaced the tail light circuit board it worked for about 3 wks now its out again! all of the lights work except when u hit the brakes the drivers side doesnt. Thanks

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Trace all your wires theres a break somewhere

Posted on May 20, 2011

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1 Answer

Where is the tail light fuse?


The tail light fuse is under the rear seat on the drivers side.

Jan 17, 2016 | 2003 GMC Envoy

1 Answer

Fthe tail light works but the brake light doesn't work, it probably is the module that has a circuit board. I have replaced it 2 or 3 times on my 2004 XL Envoy ... can I get a part number and location...


First let's determine which brake lights are not working. Does the high mounted brake light work? Do both left and right brake light not work? If none of the brake light work, the problem could be the brake light switch at the brake pedal OR fuse #12 in the underhood fuse panel.
If only the bake lights at the corner lamp assembly don't work, check fuse #34 in the rear fuse panel.
The module your are referring to is the circuit board located in each of the corner lamp assemblies, check on website www.compnine.com for the part number of this item. I don't believe this is your problem though.

Jul 25, 2011 | 2004 GMC Envoy

1 Answer

I have a 2005 GMC Envoy. Have tail lites but no brake lites. Third lite on top works whet brakes applied


Since the high mounted brake light works you know that the brake light switch is working. Now you need to check the brake light bulbs in the rear tail light assemblies. The brake lights are separate from the tail light (parking or running lights). There are two screws that hold the rear light assemblies in place.

Mar 13, 2011 | 2005 GMC Envoy

1 Answer

2003 GMC Envoy have no brake lights, only the top light on the gate works, can you help thanks


First and easiest we need to check for power going to the rear lights at the plug that goes into the tail light housing. There is a board that the lights plug into that goes bad. The Envoy uses separate brake and turn bulbs so the 3rd brake and the two side are on the same circuit.

Feb 15, 2011 | 2003 GMC Envoy

2 Answers

Tail lights work on both sides. turn signal and


Sounds like you need to replace the drivers brake/tail light.

Dec 14, 2009 | 1998 GMC Sierra

1 Answer

Brake lights wont work right tail light wont work 2003 gmc envoy


check globes and check brake light switch under dash on brake pedal.

Oct 27, 2009 | 2004 GMC Envoy

1 Answer

BRAKE LIGHTS..... A SHORT MAYBE?


FYI - there was a recall on the GMC Envoy tail light circuit boards back in 2004-05. I would suggest taking it to an authorized dealer and ask them about it. A lot of times these types of things are taken care of at no charge if it is/was a factory recall. It's a safety issue - they should take care of it.

May 19, 2009 | 2002 GMC Envoy

1 Answer

2003 gmc envoy xl brake lights dont work


theres usually a pressure switch behind the brake pedal, sometimes the plastic hex nut rattles loose and you have to retighten it.

Apr 12, 2009 | 2000 GMC Sierra

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