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

Interior Lamp Relay Controls


Object Number: 885712  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Door Lock OPEN Inputs to the Modules
Rear Fuse Block B+ Bus
Left Courtesy, Rear Compartment, and Ignition Cylinder Lamps
Right Courtesy, and I/P Compartment Lamps
Figure 2:

Door Lock OPEN Inputs to the Modules


Object Number: 765809  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Left Courtesy, Rear Compartment, and Ignition Cylinder Lamps
nterior Lamp Relay Controls
Serial Data Class 2
Simple Bus Interface (SBI)
Figure 3:

Left Courtesy, Rear Compartment, and Ignition Cylinder Lamps


Object Number: 885714  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Right Courtesy, and I/P Compartment Lamps
Door Lock OPEN Inputs to the Modules
nterior Lamp Relay Controls
Headliner Lamps
Headliner Lamps
Right Courtesy, and I/P Compartment Lamps
Right Courtesy, and I/P Compartment Lamps
I/P and CIGAR Fuses
I/P and CIGAR Fuses
G401 - 1 of 2
Figure 4:

Right Courtesy and I/P Compartment Lamps


Object Number: 765813  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Headliner Lamps
Left Courtesy, Rear Compartment, and Ignition Cylinder Lamps
nterior Lamp Relay Controls
G201 - 1 of 2
Left Courtesy, Rear Compartment, and Ignition Cylinder Lamps
G201 - 1 of 2
Left Courtesy, Rear Compartment, and Ignition Cylinder Lamps
Figure 5:

Headliner Lamps


Object Number: 765816  Size: FS
Master Electrical Component List
Interior Lighting Systems Description and Operation
Right Courtesy, and I/P Compartment Lamps
Left Courtesy, Rear Compartment, and Ignition Cylinder Lamps
Left Courtesy, Rear Compartment, and Ignition Cylinder Lamps
G402