Headlights and taillights not working?

2007 CHEVROLET TRAILBLAZER
85,000 MILES • 6 CYL • 4WD • AUTOMATIC
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DAVID LEWTON
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  • 2 POSTS
Last year the low beam headlights went out. I replaced the headlight driver's module and they worked again. Last week my wife was driving home, and the headlights and taillights quit, but the dash lights worked. She pulled over, in about 10 or 15 minutes later the lights came back on. About 5 miles before she got home, the head and taillights went out again and did not come back on. When I checked the car in the morning, I found that the instrument panel lights worked. The head and taillights didn't work automatic but worked fine in the manual position. I looked at the internet and someone suggested putting a new headlight switch in. I replaced it but that didn't work. What should I do next? Thanks in advance for your help! David
Sep 11, 2022 at 9:37 PM
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MIKE H R
  • CERTIFIED EXPERT
  • 3,094 POSTS
to start check the headlight relay and fuses.
Sep 12, 2022 at 10:15 AM
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DAVID LEWTON
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I could not see your recommendation. It seems odd to me that neither head nor taillights work with the light switch in the automatic position (turned to the left) but do work when the light switch is in the manual (all the way to the right) position. Could it be the body control module?
Sep 12, 2022 at 1:32 PM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Hi,

I just noticed you haven't been contacted for a few days. Have you been able to make any progress? I'm interested in knowing.

Also, let me know if the brake lights, signal lights, reverse lamps, license plate lamps, and if the high beam will turn on when you pull the flash to pass.

Take care,

Joe
Sep 15, 2022 at 6:32 PM