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

PCM Power and Ground


Object Number: 659789  Size: FS
Master Electrical Component List
Transmission Component and System Description
Sensors
OBD II Symbol Description Notice
Left Underhood Fuse Block- ABS, PCM, HZDT/SG, F/PMP and LP PK Fuses
Battery Voltage Supply to Underhood Fuse Blocks
Battery Voltage Supply to Underhood Fuse Blocks
Rear Fuse Block- CRK, PCM/CRU and SBM Fuses
G100, G101, G102 and G103
Figure 2:

4T65-E Automatic Transaxle Controls -- Sensors


Object Number: 902498  Size: FS
Master Electrical Component List
Transmission Component and System Description
Solenoids and Stop Lamp Switch
PCM Power and Ground
OBD II Symbol Description Notice
5 Volt and Low Reference
Figure 3:

4T65-E Automatic Transaxle Controls -- Solenoids, TCC/Cruise Release Switch


Object Number: 659797  Size: FS
Master Electrical Component List
Transmission Component and System Description
VSS and Transmission Internal Mode Switch
Sensors
OBD II Symbol Description Notice
Battery Voltage Supply to Underhood Fuse Blocks
Battery Voltage Supply to Underhood Fuse Blocks
Brake Pedal Switches and Indicator
Figure 4:

VSS and Automatic Transaxle Internal Mode Switch


Object Number: 659801  Size: FS
Master Electrical Component List
Transmission Component and System Description
Solenoids and Stop Lamp Switch
OBD II Symbol Description Notice
Class 2 Serial Data Line
G100, G101, G102 and G103