Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hi There, I'm Clayso a certified master automobile technician with 30 years of automotive repair and diagnostic experience.
From your description most likely the headlight switch has failed. The easiest place to check this is at the C204 connector located behind the left side of the instrument panel. C204 is a 15 pin connector with 4 separate connectors in a group. 2 whites on the one side and 2 blacks on the other. With a test light check the brown wire on the longest white connector with 8 terminals. If there is no power with the park lamps turned on the headlamp switch has failed. If you need connector and location views let me know. Also let me know if you have Daytime Running Lamps (DRL).
I hope this information is helpful. If you have any questions let me know. You can reply back to me through this thread at any time.
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Hi there, I'm following up on any progress with this repair. I hope the information I gave was helpful. If you have any questions or run into any problems let me know.