Could be a stuck relay in the underhood fuse box. You can swap out the relays to test it. The DRL, low beam headight, and high beam headlight relays are the same. They can be interchanged.
My high beam relay was bad from the factory. At night, I switched on my high beams, and lost my headlights! I swapped the relays and found the bad one. The relays are standard GM. Chevy dealers stock them.
Klaus
|