GM Service Manual Online
For 1990-2009 cars only

Wiper/Washer

Scan Tool Parameter

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, Engine OFF, Wipers OFF

Washer Relay Cmd.

On/Off

Off

Windshield Washer Switch

Active/Inactive

Inactive

Windshield Wiper Switch

Off, Intermittent, Low, High, Switch Fault

Off

Wiper Delay Setting

D1, D2, D3, D4, D5

Varies

Wiper High Speed Relay Cmd.

On/Off

Off

Wiper High Speed Switch

Active/Inactive

Inactive

Wiper Park Switch

Active/Inactive

Inactive

Wiper Relay Cmd.

On/Off

Off