GM Service Manual Online
For 1990-2009 cars only

Scan Tool Output Control

Additional Menu Selections

Description

Horn

Miscellaneous Test

The body control module (BCM) actuates the horn relay for 5 seconds when you select ON. The horn should sound for 5 seconds.

Parking Lamps

Light Test

The BCM actuates the park lamp relay for 5 seconds when you select ON. The park lamps should illuminate for 5 seconds.

Security LED

Light Test

The BCM actuates the security LED when you select ON. The security LED should illuminate until commanded OFF.