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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29427
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Having issue with headlights coming back on. 04 trailblazer

Customer Question

Customer: having issue with headlights coming back on. 04 trailblazer turn car off, headlights off. 10-12 minutes. then they come back on new battery. already killed the last one
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Submitted: 11 months ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 11 months ago.

There is a device much like a relay and that looks similar to a relay for the low beam bulbs in the under hood fuse block for the low beams. This is common for failing. There is another one for the engine fan. Swap these to see if the lights come on. The numbers on the top are 15016745. That is also the part number to order if that if the lights come on.