Horn
Press 
on the steering wheel
pad to sound the horn.
See also:
A breakthrough interior
The Buick Regal's finely crafted, sporty and well-appointed interior builds
on the exceptional attention to detail found in the Enclave and LaCrosse,
blending signature styling cues with contempor ...
Electric Parking Brake Light
The Electric Parking Brake (EPB) light should come on briefly as the engine is
started. If it does not come on, have the vehicle serviced by your dealer.
The parking brake status light comes on w ...
Adjusting the Fader and Balance
1. Press the TONE button.
2. Select Fader or Balance.
3. Select the value.
Press the BACK button to go
back to the Tone Settings menu. ...