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

Module Power, Ground, Serial Data


Object Number: 1825595  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
Pressure Controls - 1 of 2 and Shift Controls
Underhood Fuse Block B+ Bus - 2 of 2
Underhood Fuse Block B+ Bus - 2 of 2
G104 (2 of 2)
Stop Lamps - Export
Stop Lamps - Domestic
IGN MAIN Relay, ABS IGN Fuse, AIRBAG Fuse, ECM TCM IGN Fuse, and MISC IGN Fuse
Power Modes - ACCY and RAP
G104 (2 of 2)
G100 (LH2)
High Speed GMLAN
Figure 2:

Pressure Controls - 1 of 2 and Shift Controls


Object Number: 1825597  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
Pressure Controls - 2 of 2 and Speed Sensors
Module Power, Ground, Serial Data
Figure 3:

Pressure Controls - 2 of 2 and Speed Sensors


Object Number: 1825599  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
Tap Shift System
Pressure Controls - 1 of 2 and Shift Controls
Figure 4:

Tap Shift System


Object Number: 1858703  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
Transmission Range Signals and Tow/Haul Switch
Pressure Controls - 2 of 2 and Speed Sensors
Steering Wheel Controls Schematic
Cruise Control Schematics
High Speed GMLAN
Figure 5:

Transmission Range Signals and Tow/Haul Switch


Object Number: 1825601  Size: FS
Master Electrical Component List
Electronic Component Description
Control Module References
Tap Shift System
High Speed GMLAN
High Speed GMLAN
Dimming Lamps (1 of 3)
G200 (1 of 2) LHD
G200 2 OF 2 (RHD)