Question about 2002 GMC Envoy

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Brakelight don't work when car running

On my 2002 GMC Envoy, the brakelight all work when the car is in the driveway. All bulbs have been taken out and checked and the wires appear ok. When the car is on the raod, the overhead brakelight and the right brakelight do not work but the left brakelight works. Where is the common problem?

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  • Rheniun188 Apr 17, 2009

    I checked the bulbs by removing them and reinstalling. Then, stepped on the brake while someone was watching, when the car was in the driveway without the engine running and the key off. Today, while following the envoy, I asked my wife who was driving it to step on and off of the brake while I watched, this was with gentle braking and that required to come to a full stop.

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  • 297 Answers

How you check this phenomenon.
by 2nd person?
Switch or wire harness problem

Posted on Apr 17, 2009

  • astrid prieto Apr 17, 2009

    Key of not running, brake lights working?

    Strange.........

    Wiring not ok.

    Take her to the shop.

    You are not allowed to drive that even.

    Note: I have been in wire harness fabrication also

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