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

Engine to Dash and Steering Column


Object Number: 186178  Size: MF
(1)Ignition Switch
(2)Steering Column
(3)Brake Transmission Shift Interlock (BTSI) Solenoid
(4)Data Link Connector (DLC)
(5)Hazard Lamps Flasher
(6)P100
(7)Fuel Pump Prime
(8)C100
(9)C207
(10)C200
(11)Windshield Wiper Pulse Control Module
Figure 2:

Steering Column


Object Number: 329566  Size: SF
(1)Hazard Lamps Flasher Switch
(2)Transmission Range (TR) Lamp
(3)Multifunction Lever
(4)Turn Signal Switch Connector
(5)Cruise Control Switch Connector (P32)
(6)Wiper Switch Connector