Question about 2003 GMC Sierra

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2003 GMC Sierra....The headlights wont come on. They come on when I put the key in and just turn it like to turn on the radio. But as soon as I start the engine they go out. This is true with having the switch on auto or manually turning them on. The park lights seem to be working just fine.

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So what do you see come on besides the parking lights? Do you see the high beams come on when you turn them on, do you see low beams or can you see the day time running lights come on (they are the ones that are closest to the grill). What have you done or checked so far?

Posted on Nov 12, 2009

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