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

Instrument Panel, Center (Typical)


Object Number: 231681  Size: LF
(1)Relay Block 2
Figure 2:

Instrument Panel


Object Number: 231673  Size: LF
(1)Tachometer
(2)Horn Switch
(3)Speedometer
(4)IP Lamps Dimmer Control
(5)Right Multifunction Lever
Figure 3:

Steering Column, Left


Object Number: 228426  Size: LF
(1)Multifunction Switch
(2)Right Multifunction Lever
(3)Ignition Switch
(4)Left Multifunction Lever
Figure 4:

Single and Dual Electric Horns Wiring


Object Number: 231467  Size: LF
(1)Front Chassis Harness (Dual Electric Horns)
(2)Front Chassis Harness (Single Electric Horn)
(3)High A-Note Horn (Single Electric Horn)
(4)High-A Note (Dual Electric Horns)
(5)Low F-Note Horn (Dual Electric Horns)
(6)Dual Electric Horns Harness