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

Power, Ground, Stop Lamp, Serial Data


Object Number: 2025147  Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
Solenoids, TFT Sensor, TFP Switch
B+ Bus
Ignition Switch
Fuse Block - Underhood ALTERNATOR, EF1, EF3, EF5, EF18, EF19, Ef27, EF30, EF31 Fuses and POWER WINDOW, ENGINE MAIN Relays
Stop Lamps
Fuse Block - I/P F10, F16, F17 Fuses
IMS, Tap Up/Tap Down Switches
High Speed GMLAN - MH7/MH8
G103, G105, G108 (Diesel), G201
Figure 2:

Solenoids, TFT Sensor, TFP Switch


Object Number: 2025152  Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
Speed Sensors
Power, Ground, Stop Lamp, Serial Data
Figure 3:

Speed Sensors


Object Number: 2025153  Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
IMS, Tap Up/Tap Down Switches
Solenoids, TFT Sensor, TFP Switch
High Speed GMLAN - MH7/MH8
Figure 4:

IMS, Tap Up/Tap Down Switches


Object Number: 2025155  Size: FS
Master Electrical Component List
Transmission Component and System Description
Control Module References
Speed Sensors
Ignition Switch
Starting
High Speed GMLAN - MH7/MH8
Power, Ground, Stop Lamp, Serial Data
G202, 1 of 2