Scan Tool Output Controls

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Scan Tool Output Control	Additional Menu Selection(s)	Description
Horn Relay Input	Output Control	The body control module (BCM) energizes the horn relay momentarily when you select On, resulting in the horn sounding.