2003 Chevy Monte Carlo Headlights Wont Turn On

Tiny
SEAL0716
  • 2003 CHEVROLET MONTE CARLO

Electrical problem
2003 Chevy Monte Carlo 6 cyl Front Wheel Drive Automatic 150000 miles

Im having problems with my 03 Monte Carlo SS Headlights. The other night they were working perfectly. I parked the car and shut it off. When I went to start it up the lights didn't turn on as they usually do. When I manually attempted to pull the switch so that the lights would come on, nothing happened. The only way for the headlamps to come on is the pull the lever on the steering column in which the high beams came on, however would not stay on. All other light work, fog, interior, turn signals, brakes, etc. Just not the high/low beams. And this vehicle does have a day/night sensor that automatically turns on the lights.

For awhile before the light went out, I was also getting a "Highbeams Out" message on my dash, when the highbeams were perfectly fine. Hope this helps to diagnose a little better.

For awhile before the light went out, I was also getting a "Highbeams Out" message on my dash, when the highbeams were perfectly fine. Hope this helps to diagnose a little better.

I've checked my fuses, Relays, Bulbs, connections, and other common problems. The last thing I think it could be would be the light switch on the steering column. Any feedback/troubleshooting would be a great help.

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Tuesday, September 21st, 2010 AT 9:21 AM

1 Reply

Tiny
2CARPROS KEN
  • ADMIN
  • 12,160 POSTS

Hi seal0716,

Thank you for the donation.

There is a DRL relay that control the system as well also additional fuses, The switch could be bad as they have had problems with these in that car. Here is a wiring diagram for you to start checking for power which will help you determine what the problem is.

The headlights are controlled ultimately controlled by the Body Control Module (BCM) which is equipped with self diagnostics. You can read the codes to see if there is a problem with it.

The "High Beams Out " message indicates possible BCM fault. Somewhere there is a communication error.

Some scanners are not able to retrieve other than engine trouble codes. Ensure the scanner you used can retrieve all other codes.

Here is a guide on how to use a test light

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please run some tests and get back to us so we can continue helping you.

Best, Ken

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Tuesday, December 6th, 2016 AT 8:08 PM

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