GM Service Manual Online
For 1990-2009 cars only

Scan Tool Output Control

Additional Menu Selections

Description

Headlamps

Light Test

The BCM actuates the headlamp relay when you select ON. The headlamps should illuminate until commanded OFF.

Horn

Miscellaneous Test

The 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.