GM Service Manual Online
For 1990-2009 cars only

Scan Tool Output Control

Additional Menu Selections

Description

Headlamp Washer

Miscellaneous Test

The body control module (BCM) activates the headlamp washer relay when you select On. The relay should then apply battery voltage to the headlamp washer motor.

Wiper Motor Relay

Miscellaneous Test

The BCM activates the windshield wiper relay when you select On. The relay should then apply battery voltage to the wiper motor.