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

Ignition Switch, Remote Control Door Lock Receiver


Object Number: 688232  Size: FS
Master Electrical Component List
Audible Warnings Description and Operation
DRL and Door Jamb Switch
Junction Block 3
G204, Junction Block 1, and SP256
ALT-S, AM2, DOME, EFI, Hazard, Horn, and Main Fuses
ALT-S, AM2, DOME, EFI, Hazard, Horn, and Main Fuses
ALT-S, AM2, DOME, EFI, Hazard, Horn, and Main Fuses
Gauge Fuse
Gauge Fuse
Door Lock Actuators and SP253
Instrument Cluster Assembly
Figure 2:

DRL and Door Jamb Switch


Object Number: 688239  Size: FS
Master Electrical Component List
Audible Warnings Description and Operation
Ignition Switch, Remote Control Door Lock Receiver
Seat Belts
LH Rear Combination Lamp and Right Front Park/Turn Lamp
ABS, ALT, AMI, DEF, DYL, ECU-B, HTR, OBD, POWER and STOP Fuses
G200, G203, SP250, and SP650
LH Rear Combination Lamp and Right Front Park/Turn Lamp