GM Service Manual Online
For 1990-2009 cars only

Accessory

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition in RUN, Engine OFF, All Doors Closed, Park Brake Applied (DRLs OFF)

Rear Defog Switch

Inputs

Active/Inactive

Inactive

Rear Defog Relay Cmd.

Outputs

On/Off

Off