Question about 1996 GMC Sierra

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High beam wiring diagram for 1996 gmc sierra

My high beams wont come on. I wiggle the wiring harness under the dash and they come one and back off. I need to know which wires are for the high beams so that I can fix this without changing the harness

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6ya6ya
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Posted on Jan 02, 2017

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Molson02536
  • 3854 Answers

SOURCE: online 1996 gmc yukon headlight schematic? free?

It sounds like it's your Headlight switch has gone bad, I'm thinking that the high beams are the daytime running light which is the same as your High beams. 
If you go to Auto Zone or Parts Source, they have the replacement switch with step by step instructions. Try not to run your Headlights too long from your running light's. The headlight's draw more amps then the running lights and can melt the wire which can result in a short and worst a fire.
If you remove the headlight switch from the dash, check the orange wire for power, if there is 12 volts. Good chance's are that the switch is bad, common on the GM's.
Good luck and hope this helps. I believe they go around $70.00 or do what most guys do. Salvage Yard range from $10.00 to $40.00 and there also have warranty.

Posted on May 10, 2009

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AUTODOC01
  • 216 Answers

SOURCE: GMC truck light issue: My high beam / low beam

well as a tech i dont recomend it but all you got to do is swap the wires on the headlamps at the bulb you will see 3 wires one is a ground the other feeds low beam the other high beam . take a test light and find the one thats hot and cut it and connect it to the other blade , leave only one wire on the low beam terminal so you dont short it out .

Posted on Aug 27, 2009

Testimonial: "Great info many thx"

  • 396 Answers

SOURCE: 2008 gmc truck, Low beams quit working.

It's probably unlikely that both bulbs would go out at the same time, but the first thing I would do is replace at least one of the bulbs with a new bulb.

If that's not the problem, there is a problem with the electrical circuit. There are relays that control the headlights, and the switch itself could have gone bad.

Posted on Oct 12, 2009

Testimonial: "thankyou. I believe your answer makes sense. I will take it to the dealer tomorrow. very helpful."

gladys_neal
  • 334 Answers

SOURCE: 2008 gmc sierra headlight adjustment for up and

did you use the numbers on headlamp lens for the headlight aimer

Posted on Nov 07, 2009

  • 610 Answers

SOURCE: 1998 GMC Sierra has running

first off, be sure your low beams aren't both burned out. it happens all the time. next check your dimmer switch operation. (i'm betting on low beams burned out) good luck.

Posted on Dec 21, 2010

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