GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Wiper Switches


Object Number: 1481007  Size: LF
(1)Wiper Intermittent Switch (Optional)
(2)Wiper Intermittent Switch and Rear Fog Lamp Switch (w/Rear Fog Lamps)
(3)Wiper Switch
Figure 2:

Rain Sensor, Wiper Motor, Washer Pump


Object Number: 1481008  Size: LF
(1)Rain Sensor (Optional)
(2)Windshield Wiper Motor
(3)Windshield Washer Fluid Pump