Question about 1999 GMC Yukon
When I apply the brake pedal the 3rd brake light comes on, but no tail lights. When I turn the lights on, the tail lights turn on but the brake lights also stay on. Turn signals were working then stopped. All fuses and bulbs are good.
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.
Posted on Feb 09, 2009
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Posted on Jan 02, 2017
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