Question about 2007 Chevrolet Silverado 2500HD

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2007 chevy 2500 HD deisel headlights

When i start my truck and the headlights are set in the AUTO position they flash on and off. This just started recently. When I turn the headlight from Auto to ON they stop flashing. I always tow a trailer. What would cause this

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If you have a brake relay for the trailer, it may connected to the wrong wire instead of the hot brake light wire, but if you have had no trouble with a factory wiring harness before, it is likely that the relay is sticking its internal contact points and only this may need to be replaced.

Posted on Dec 30, 2008

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