Question about 2000 GMC Sierra

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HELP!! 1996 GMC Sierra Has no brake lights or Hazards but blinkers and running lights work

Here is what I have checked/replaced so far: bulbs, checked fuses, i replaced the brake light switch and when that didn't work I dropped $150 on a new multi function switch because thats what everything i was reading was saying it likely was. Well that still didnt fix it so now Im leaning towards a bad ground maybe? I need a wiring diagram. does anyone know the best way to get one?

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Beleive there is a junction box on those models that main tail lights harness comes too then is distributed out in seperate smaller harnesses.

Posted on Apr 28, 2013

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Posted on Jan 02, 2017

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SOURCE: brake lights dont work

make sure your geetin 12v to brake switch if not jumper a wire then try it

Posted on Mar 29, 2009

  • 375 Answers

SOURCE: 1998 gmc sierra brake lights

did u check that they not burn?if not you should Check the wires going into the steering column if you don't have separate turn signal lights and brake lights because if they use the same bulb then the turn signal may be bad. If I remember correctly that particular car doesn't work this way, but I include it just in case.

Posted on Jun 29, 2008

  • 225 Answers

SOURCE: 1997 GMC Sierra p/u. Brake light & blinker out. Taillights ok.

I have notice that this is a common problem. The socket most of the time goes bad, I don't know why but they just do. You can pick them up at any parts store for around 5.00 each. If you don't have a volt meter and ground straps to test it right, then I would try changing the sockets out. Quick and easy. Let us know how it goes.

Posted on Aug 30, 2009

ftw1952
  • 10319 Answers

SOURCE: wiring diagram for 1996 gmc sierra brake asembly

The brake light switch is at fault. Get a new one and replace it. The location is at the brake pedal area mounted on a bracket with a plunger stud that rest on the brake pedal's arm the pad is attached to

Posted on May 08, 2010

Magaiver
  • 707 Answers

SOURCE: My 2001 GMC sierra

It may be the switch on the brake pedel.Hope this helps.

Posted on Aug 13, 2010

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