Engine stalls when lights are on

2005 CHEVROLET TRAILBLAZER
160 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC
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GRIZZ
  • MEMBER
  • 1 POST
passenger side lights are dim. car will stall lights are turned on.
Nov 3, 2021 at 11:58 PM
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AL514
  • ✓Experienced Mechanic
  • 5,642 POSTS
Hello, it sounds like you may have a charging system that is not working correctly, when the headlights are turned on it may be pulling the entire system voltage too low, or there may be a short circuit somewhere that just isn't blowing a fuse. Is anything else in the vehicle now working correctly? Possibly a bad battery too.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

https://www.2carpros.com/articles/how-a-car-electrical-system-works

https://www.2carpros.com/articles/car-battery-load-test
Nov 4, 2021 at 10:45 AM
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