Question about 2000 GMC Safari

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All lights work and brake light at top works. brake lights on bottom left and right don't work. It was hook up to trailer wires connection. going down the road and when you turn on the right turn signal the cruise control would go off. the brake lights would come on but the right turn signal would stop working. as soon as you let off the brakes the turn signal would work again. I took the trailer connections off and replaced brake fuse and they still don't work.

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Check a few things...
- The bulbs
- Check for ground at brake lamp connectors
- Check your wiring at the connectors for power
- Check for another fuse blown
- Do not hook up the trailer until you fix the ground problem on the trailer
- On some models, there is a module to control the rear/trailer lighting system. There may be a problem in the module.

Posted on Jul 24, 2009

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2004 Chevy Express 1500 keeps blowing trailer light fuse


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