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Check for bad ground wire I would suspect a short in the turn signal switch; there is so much power running near the switch in the column.( think cruise,hazards, turn signals, horn,ignition, high beams) The last two weird turn signal problems I had ( Honda passport SUV, Olds cutlass supreme) turned out to be shorts/worn spots in the turn signal switch assembly. Neither were hard to do and fixed the problem. thanks for input. Ive check for bad connections with no luck. When I turn the headlights on and pull the back turn signals out of the socket you can see a very small bit of current trying to light the bulb. Any help out there would be appreciated.

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โˆ™ 2007-03-23 19:54:38
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Q: Why would both your turn signals light up when you put your 2000 gmc in gear and accelerate?
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