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

Body Control Module (BCM), C200 and C203


Object Number: 363732  Size: MF
(1)C200
(2)Instrument Panel
(3)C203
(4)Body Control Module (BCM)
(5)Body Control Module (BCM) - C1
(6)Body Control Module (BCM) - C2
(7)Body Control Module (BCM) - C3
(8)Heater Controls
Figure 2:

Steering Column


Object Number: 363688  Size: MF
(1)Ignition Switch and Ignition Key In Alarm Switch
(2)Hazard Switch Connector
(3)Hazard Switch
(4)Supplemental Inflatable Restraint Steering Wheel Module Coil
(5)C215
(6)Supplemental Inflatable Restraint Wheel Inflator Module Connector
(7)Multifunction Switch
(8)Park Position Switch Connector
(9)C211 (A,B,C)
(10)BTSI Actuator
(11)Shift Lever
Figure 3:

Body Relay Block


Object Number: 390261  Size: LF
(1)Park Lamp Relay
(2)Courtesy Lamp Relay
(3)Retained Accessory Power Relay
(4)Power Seats Circuit Breaker (Not Used)
(5)Power Windows Circuit Breaker (Not Used)
(6)Inadvertent Power Relay
(7)Door Lock Relay (Not Used)
(8)Headlamp Ground Relay
(9)Driver Door Unlock Relay (Not Used)
(10)Door Unlock Relay (Not Used)
Figure 4:

Daytime Running Lamp (DRL) Relay


Object Number: 477202  Size: LF
Figure 5:

Headlamp Power Relay


Object Number: 478632  Size: LF
Figure 6:

HORN Relay


Object Number: 478634  Size: LF
Figure 7:

Body Control Module Details


Object Number: 384271  Size: LF
(1)HVAC Assembly
(1)HVAC Assembly
(2)Body Control Module