Question about 1999 GMC Sierra

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Left rear brake light and tail light comes on but left turn signal will not.

Tried changing bulb but light rear turn signal is still out.

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  • GMC Master
  • 2,431 Answers

You need the tail lamp assembly,

Posted on Dec 09, 2012

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: brake lights/rear turn signals

I had the same problem with my 1999 Yukon. The electric board needed to be replaced. Rust starts to build up and shorts out or blows the bulb. The dealership charged $73.60 for the part and I installed it myself (Saved $30).

Posted on Jan 05, 2009

TLRogue
  • 99 Answers

SOURCE: brake lights dont work untill i turn the lights on, then stay on

Hi, are the tail lights and the brake lights in the same light unit?
If so, there is a possibility the bulbs are in the wrong way. If it is a stop/tail bulb then there are two locating pegs on the side of the metal part. If you look, one is higher than the other which has to locate into the correct slot in the holder.

Another possibility is the bulb is wrong, there are double and single contacts. Check the contact on the base of the bulb is the same as the contacts in the holder.

TL

Posted on Feb 09, 2009

ourhowse
  • 2007 Answers

SOURCE: 2005 Canyon turn signal problem

No, but that's probably where your problem is. The wires get the hell beat out of them by stones, and then they short out and cause problems. I would take a look at it.

Posted on May 06, 2009

  • 2 Answers

SOURCE: 2007 Yukon tail stop lights wont light up

It sounds like the brake switch, that is usually located along the shaft of the brake peddle under the dash, these sometimes are in a bracket for ajustment may not be able to depress switch. Falow starting at peddle go up to dash, you should be able to see it. Hope this helps.

Posted on Sep 08, 2009

  • 439 Answers

SOURCE: rear turn signals and brake lights out. Front

There is a relay that runs the brake/turn signals. You may need to just replace this relay or possibly a fuse. but if the turn signals, brake lights and flashers are not working in the rear the relay is most likely the cause unless you have towed anything lately. I would also check the pigtail under the rear bumper for corrosion or looseness.

Posted on Nov 04, 2009

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1 Answer

How do i replace left rear brake light bulb


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If you have lost signals, brake lights and tail lights, then it is more likely that the ground supplied to the bulbs is not working, since the tail lights share noting in common with the brakes lights and turn signals but ground.

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