Question about 1999 GMC Suburban

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1997 S-10 rear left brake&turn signal will not work.all other lights work.

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  • greeneyeszoe Mar 05, 2009

    I have a 1994 GMC Suburban. My right rear brake light AND turn signal are not operating. My left turn signal and brake light ARE functioning properly. I replaced the middle bulb (there are three when you take off the cover, it's the middle bulb I replaced) and it's still not working. Do I need to replace the component panel that is inside the light assembly?

  • Colin Stickland
    Colin Stickland May 11, 2010

    is it one light or two seperate lights?

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I had the same problem on a 97 gmc surburban. I replaced the bulbs and would work until I hit a bump. I then replaced the panel and no more problems. Hope this helps.

Posted on Mar 18, 2009

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Left bleaker and break light not working. Turn signal works bleaks faster than right side.


Has the vehicle been in an accident on the left rear side. First check the bulb to be sure it is not defective, trade it out with the side that works properly to test. If the bulb works well then My thought are you may have a shorted wire. The turn signal flasher works by heat build up within the flasher the heat is caused by the load of the bulbs, the load heats the metal spring causing it to open the circuit then as quickly as it cools down the circuit closes again lighting the bulbs.
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Often times if trailer lighting is connected the flasher will also blink a little faster because of the extra load of additional bulbs.

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