Check for a bad brake light fuse! if not the fuse, the brake light switch operates brake lights and if bad you will not be able to shift it out of park, as well as the brake lights not coming on.! because you have to put foot on brake to do so. if bad switch, it wont let it out of park. it could be just out of adjustment also!! good-day !
Yes the lights short out in the bed wiring look for the harness under the bed. look for any frayed or split wires. you may have to re-wire the bed.
Have replaced the brake light switch in my 1997 GMC Sierra, but still have no brake lights. All other lights are working fine. All bulbs and the dash fuse have also been replaced. Is there more than one fuse that could be related to this problem? Any other suggestions what could be causing the problem?
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