Question about 2004 GMC Envoy
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Posted on Jan 02, 2017
SOURCE: Need fuse schematic
if the fuse was blown the stop lights on both sides would be inop, also if the stop light circuit were dead u would be unable to get the trans out of park, use a 12 volt test light and test the brake light switch at the top of the brake pedal, u can buy a test light from Autozone, kragen and others for about $5 US. If the system has power cjheck the bulb socket it may be defective, use the 12 volt test light while someone pushes the brake pedal. let me know what u find and i will give u further assistance as ness.
Posted on Jan 13, 2009
It wouldn't be a fuse if that's the only light that's not working, I believe all of the parking lights are on the same fuse. It's most likely a bad ground or corrosion inside the socket where the bulb makes the electrical connection. So check the socket to make sure it has no corrosion, if it does, clean it up and apply some dielectric grease (available at any parts store) to prevent future corrosion, and check for a loose or broken ground wire.
Posted on Apr 13, 2009
You have to check the brake light switch which should be around the brake pedal on the upperside.
Ones located rremove the wires tht go to the switch and jump them by using a piece of wire, thn check if the brake lights come 'on'. If they do , thn its the switch tht may need replacing or even sometimes adjusting inorder to operate.
Hope this helps.
Posted on May 10, 2009
checked all fuses even under hood? may have bad signal switch or bad brake light switch yes even if 3rd brake works.also check wiring under rear fender by bumper thats were wire harness is hope this helps.
Posted on Oct 09, 2009
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