Component Testing
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Horn
- Ignition OFF, disconnect the harness connector at the appropriate horn.
- Install a 10A fused jumper wire between the control terminal B and 12 volts.
- Install a jumper wire between the ground terminal A and ground. Verify the horn emits a clear and even tone.
- If the sound emitted is not clear and even, replace the horn.