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

D/L Fuse, Gauge Fuse, and Remote Control Door Lock Receiver


Object Number: 688377  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Ignition Key Alarm Switch and Tail Relay
ALT-S, AM2, DOME, EFI, Hazard, Horn, and Main Fuses
ALT-S, AM2, DOME, EFI, Hazard, Horn, and Main Fuses
Gauge Fuse
G204, Junction Block 1, and SP256
ECU-IG, TURN, and WIP Fuse
Gauge Fuse
Gauge Fuse
G204, Junction Block 1, and SP256
Junction Block 2
Figure 2:

Ignition Key Alarm Switch and Tail Relay


Object Number: 688382  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Door Lock Switches and SP252
D/L Fuse, Gauge Fuse, and Remote Control Door Lock Receiver
G204, Junction Block 1, and SP256
Junction Block 3
Junction Block 1 and Junction Block 3
ABS, ALT, AMI, DEF, DYL, ECU-B, HTR, OBD, POWER and STOP Fuses
LH Rear Combination Lamp and Right Front Park/Turn Lamp
Figure 3:

Door Lock Switches and SP252


Object Number: 688387  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Door Lock Actuation
Ignition Key Alarm Switch and Tail Relay
G200, G203, SP250, and SP650
G200, G203, SP250, and SP650
SP550 and SP551
Figure 4:

Door Lock Actuation


Object Number: 688390  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Door Lock Actuators and SP253
Door Lock Switches and SP252
G200, G203, SP250, and SP650
G200, G203, SP250, and SP650
SP550 and SP551
SP550 and SP551
Figure 5:

Door Lock Actuators and SP253


Object Number: 688395  Size: FS
Master Electrical Component List
Keyless Entry System Description and Operation
Door Lock Actuation