Headlights not working properly

2001 BUICK LESABRE
115,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
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MARIO RICO
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  • 2 POSTS
My headlights do not turn on. My high beams will turn on and stay on. All other lights also work fine. Fuses were good. The bulbs were good.
Dec 23, 2021 at 3:23 PM
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SQM
  • CERTIFIED EXPERT
  • 6,383 POSTS
Hello,

There is a relay for the low beam headlight bulbs. It is located under the hood fuse block.
A bad relay can prevent the headlights from coming on.
Check for any corrosion or burnt pin(s).

Here is a guide on how to test relays:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

I have attached diagrams below. It is number 28.

If the relay is good and getting power, it could be a wiring issue.

Please let me know what you find with the relay.

Thank you.
Dec 24, 2021 at 6:11 PM