Question about 1991 GMC Sierra

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Brake lights wont turn on.1994 gmc sierra.

Some times when i brake 'check brakes' light in dash will turn on and engine studders.
-checked fuse.-changed brake light switch.-changed ignition switch,because at first brake lights would work with ignition in 'off'' position.
so i thought maybe the turn signal in column was bad.
-changed column.
still no brake lights.
any suggestions?

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  • wallerboy04 Jan 31, 2009

    my brakelights wont work but i messed around with the brake light switch and they started working but they quit working right away but ive ckecked all wires coming from the switch i need help

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  • Master
  • 903 Answers

This may sound too simple, but first verify that you are getting voltage to the light socket. Use meter on d.c. If you are getting voltage, and your bulb is good, it could be a bad ground. Don't overlook the brake light system goes through the directional signal in the steering column.

Posted on Feb 20, 2009

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