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

Door Lock Actuators


Object Number: 642274  Size: FS
Interior Lamp Relays
Lighting Systems Component Views
Interior Lighting Systems Description and Operation
Power Door Serial Data
Class 2 Serial Data Line (LH Drive) (2 of 2)
Figure 2:

Interior Lamp Relays


Object Number: 642275  Size: FS
Door Lock Actuators
Rear Compartment, Courtesy, and Overhead Console Lamps
Lighting Systems Component Views
Interior Lighting Systems Description and Operation
Rear Compartment, Courtesy, and Overhead Console Lamps
Right Courtesy, Compartment, and Ignition Key Cylinder Lamps
Vanity and Reading Lamps; Interior Lamp Switch
Battery Feeds
Rear Compartment, Courtesy, and Overhead Console Lamps
Right Courtesy, Compartment, and Ignition Key Cylinder Lamps
Class 2 Serial Data Line (LH Drive) (1 of 2)
G301
Figure 3:

Rear Compartment, Courtesy, and Overhead Console Lamps


Object Number: 642277  Size: FS
Interior Lamp Relays
Vanity and Reading Lamps; Interior Lamp Switch
Lighting Systems Component Views
Interior Lighting Systems Description and Operation
Interior Lamp Relays
Vanity and Reading Lamps; Interior Lamp Switch
G402 (1 of 2)
Interior Lamp Relays
G402 (1 of 2)
G402 (1 of 2)
Figure 4:

Vanity and Reading Lamps; Interior Lamp Switch


Object Number: 642279  Size: FS
Rear Compartment, Courtesy, and Overhead Console Lamps
Right Courtesy, Compartment, and Ignition Key Cylinder Lamps
Lighting Systems Component Views
Interior Lighting Systems Description and Operation
Rear Compartment, Courtesy, and Overhead Console Lamps
Class 2 Serial Data Line (LH Drive) (1 of 2)
Interior Lamp Relays
G402 (1 of 2)
G402 (1 of 2)
G402 (1 of 2)
Figure 5:

Right Courtesy, Compartment, and Ignition Key Cylinder Lamps


Object Number: 642282  Size: FS
Vanity and Reading Lamps; Interior Lamp Switch
Lighting Systems Component Views
Interior Lighting Systems Description and Operation
Interior Lamp Relays
Power to Underhood Fuse Block
EXPORT BRK, PCM BATT, I/P, and ABS Fuses
Interior Lamp Relays
G201 (2 of 3)
G201 (2 of 3)