Question about 1996 GMC Yukon

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96 gmc yukon Reverse Lights Turn Signal Lights & CC don't work

I had a mechanic look at at and he thought it might be the unit that the turn signal cc unit plugs into - any suggestions

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  • lolo112889 Apr 18, 2009

    how do fix my reverse lights when i put the gear in reverse because the reverse light isnt working? i have a 1996 yukon

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Try having someone watch the rear of the vehicle as you put it in reverse and see if they come on briefly, The backup light switch may need to be adjusted.

Posted on Feb 17, 2009

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I have a 1992 GMC Yukon 4x4 blazer just had it in the shop when it came out the lights are all messed up. headlights work high and low. driver side turn signal dont work , passenger side turn signal don't...


If those lights all worked properly before the shop "fixed" it, take it back to the shop and ask them to make it right. If they are reputable, they will correct the problem(s). If not, think Small Claims Court.

Oct 08, 2013 | GMC Cars & Trucks

1 Answer

Is there an adjustment for the stop light switch on a 99 GMC Yukon. I have replace it and my brake lights still do not work. Park lights work fine.


There is no adjustment. The park lights are on a different circuit than the brake lights.
Do you have a third brake light that works. Its also on a different circuit but works from the same switch. Do your turn signals work. They use the same filament as the brake lights.
Also, the brake light circuit goes through the multi function (turn signal) switch.

Since the brake lights and turn signal lights use the same filament in the bulbs, the brake light circuit will pass through the turn signal switch. When a turn signal is used it cancels out the brake light for that side.

Let me know if your third brake light and turn signals work in the rear.
Also, if youy have not already, check/change the bulbs. The type of sockets those lights are in also get burned so look at them well.

Oct 18, 2011 | 1999 GMC Yukon

1 Answer

Brake lights don't work when headlights are on. When brake is pressed turn signals go fast and when brake is pressed when headlights are on they are so dim you can't see them plus turn signals...


{: ) Looks like your lightings got haywired. Have you had vehicle repairs recently? Anyway, it seems that you have poor grounding connections for the affected lightings. Some circuits share common ground, and ground terminals are strategically distributed on the vehicle. If these grounds don't have good contact with the body, chassis, or engine ground, circuit functions are badly affected. Thats why these ground points should be inspected and kept clean and tight, maintain that good wire and terminal contacts.
We can start with G100 located at the Left Front of the Engine Compartment on the left front body mount. See diagram below:


wyet_helps_24.gif Check out also G401 which is located in the chassis harness, mounted to the left rear Body mount. This ground point is shared by the rear lamps like the brakes, reverse, and rear signal lamps.
If possible check also other ground points that you may visually come across while on your search. Be sure also that fuses are all inspected good.
I hope we get lucky in finding and fixing a certain lamp function, if not all. Goodluck.

Aug 10, 2011 | 2004 GMC Yukon

1 Answer

No break lights i changed the break switch,fusesand thebulbs on my 99 yukon still no lights


Do your rear turn signals work? If not, I would bet you have a bad turn signal switch.

May 15, 2010 | 1999 GMC Yukon

1 Answer

No brake lights on 96 yukon


The brake fuse #1 is located inside the truck below the steering column. I am assuming you have verified there is 12v power at the fuse & thru the brake lamp switch (orange wire power in & white wire power out, when pedal depressed) at all times. After the brake lamp switch , power goes (white wire) to the Turn signal/hazard lamp switch & out (dark green wire-rt brake lamp & yellow left brake lamp)

Feb 16, 2009 | 1999 GMC Yukon

3 Answers

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).

Dec 14, 2008 | 1999 GMC Yukon

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