GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On/Engine Off

Windshield Washer Switch

Wiper/Washer

Active/Inactive

Inactive

Windshield Wiper Switch

Wiper/Washer

Off/Delay 1-5/Low/Mist/Hi

Off

Wiper Motor Delay Time

Wiper/Washer

Seconds

Varies

Wiper Motor Relay Command

Wiper/Washer

On/Off

Off

Wiper Motor Relay Status

Wiper/Washer

On/Off

Off

Wiper Park Switch

Wiper/Washer

Active/Inactive

Active