Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.My info is somewhat limited on your model here but I had seen no one else has responded and would like to see if I can help here.If at any time you feel that I cannot help with this please let me know.
Inspect the wiring leading to the head lights and dimmer switch as well as head light switch for any shorted or burned wiring needing repaired.If you didnt inspect the wiring at the head light and dimmer switch this needs done as well.If a connection issue is found at any of the switches like loose or damaged connections this will need repaired.
It is usually a poor connection or poor/damaged wiring that will cause this fault here needing repaired to correct this issue.
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From what you have described this sounds like a possible fault with an ecu internally.I know some models use an ecu to control and monitor the lights and if a fault is within that ecu this can cause this here.Components like a lamp control module/ecu or BCM (body control module) can cause this here.Unfortunately my info isnt showing if and which your model uses here.This will have to be checked into/tested further to pinpoint which component is at fault here for this issue and from there then repaired.
This may require the correct scan tool or computer plugged into your vehicle to check for codes and observe data signals to locate the fault.