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

Windshield Wiper Motor


Object Number: 862941  Size: LF
(1)Windshield Wiper Motor
Figure 2:

Windshield Washer Fluid Pump


Object Number: 862944  Size: LF
(1)Windshield Washer Fluid Container
(2)Windshield Washer Fluid Hose
(3)Rear Window Washer Fluid Hose -- Buick
(4)Rear Window Washer Pump -- Buick
(5)Windshield Washer Fluid Pump
(6)Washer Fluid Level Sensor
Figure 3:

Rear Window Wiper Motor -- Buick


Object Number: 862946  Size: LF
(1)Rear Window Wiper Motor
(2)Liftgate