Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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Do you have a test light?
Can you hear the horn relay activate when you try to blow the horn?
Gotcha, from what I can see in the wiring diagram, the only purpose the BCM has is for the locking and unlocking to sound the horn. You know, the beep back when you lock the car.
If you can, pull the horn relay and make sure you have power on slots 85 and 30, if you do, then I agree it will be an issue with the horn switch. This appears to be part of the hazard switch assembly on this car. You can remove the shroud and check and make sure the black wire goes to ground when you press the horn. It should have power on it with the relay plugged in.
Let me know.
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