2001 Tahoe lights
both of my brake lights are out and the driver tail light and driver signal. what could this
the right taillight works also the brake light on the cargo gate works still..
do you have trailer hitch wiring that could be coming unglued? also check globes, for burnt out!
Either burnt bulbs or a short in the wiring
left turn light bulb and one of the brake light switches. replace the left turn bulb.and the signals should work. now you need to determine which brake light witch controls the outboard lights and either replace or "adjust" it.
Assuming that you have checked the bulbs, next most common culprit the sockets that the bulbs are mounted in are a circuit board that may need to be replaced.
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