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

Module Power, Ground, Serial Data, and MIL


Object Number: 785926  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors- 5 Volt and Low Reference
OBD II Symbol Description Notice
Left Underhood Fuse Block- RUN/CRK Fuse and IGN Relay
Left Underhood Fuse Block- PCM, ABS, HZDT/SG, F/PMP, PK LP Fuses and F/PMP Relay
Left Underhood Fuse Block- PCM, SIR and INJR Fuses
Rear Fuse Block- CRK, PCM/CRU and SBM Fuses
Left Underhood Fuse Block- OXY SEN and SBM LCM Fuses
Left Underhood Fuse Block- OXY SEN and SBM LCM Fuses
Rear Fuse Block- CRK, PCM/CRU and SBM Fuses
Indicators
Class 2 Serial Data Line
G100, G101, G102 and G103
Figure 2:

Engine Data Sensors- 5 Volt and Low Reference


Object Number: 785928  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors
Module Power, Ground, Serial Data, and MIL
OBD II Symbol Description Notice
Figure 3:

Engine Data Sensors


Object Number: 785930  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Engine Data Sensors- Heated Oxygen Sensors
Engine Data Sensors- 5 Volt and Low Reference
OBD II Symbol Description Notice
Left Underhood Fuse Block- PCM, SIR and INJR Fuses
Left Underhood Fuse Block- PCM, ABS, HZDT/SG, F/PMP, PK LP Fuses and F/PMP Relay
Fuel Controls- EVAP Controls
Device Controls
Driver Information Center
VSS and Automatic Transaxle Internal Mode Switch
Gages
G100, G101, G102 and G103
G202 (1 of 4)
Figure 4:

Engine Data Sensors- Heated Oxygen Sensors


Object Number: 659447  Size: FS
Master Electrical Component List
Fuel System Description
Ignition Controls- Ignition System
Engine Data Sensors
OBD II Symbol Description Notice
Left Underhood Fuse Block- RUN/CRK Fuse and IGN Relay
G100, G101, G102 and G103
Figure 5:

Ignition Controls- Ignition System


Object Number: 785931  Size: FS
Master Electrical Component List
Electronic Ignition (EI) System Description
Ignition Controls- Sensors
Engine Data Sensors- Heated Oxygen Sensors
OBD II Symbol Description Notice
Left Underhood Fuse Block- RUN/CRK Fuse and IGN Relay
Figure 6:

Ignition Controls- Sensors


Object Number: 785932  Size: FS
Master Electrical Component List
Knock Sensor (KS) System Description
Fuel Controls- Fuel Pump Controls
Ignition Controls- Ignition System
OBD II Symbol Description Notice
Figure 7:

Fuel Controls- Fuel Pump Controls


Object Number: 659434  Size: FS
Master Electrical Component List
Fuel System Description
Fuel Controls- Fuel Injectors
Ignition Controls- Sensors
Left Underhood Fuse Block- T/SIG, A/C CLU Fuses and A/C CLU Relay
Left Underhood Fuse Block- PCM, ABS, HZDT/SG, F/PMP, PK LP Fuses and F/PMP Relay
G100, G101, G102 and G103
G400 (1 of 2)
Figure 8:

Fuel Controls- Fuel Injectors


Object Number: 659435  Size: FS
Master Electrical Component List
Fuel System Description
Fuel Controls- EVAP Controls
Fuel Controls- Fuel Pump Controls
OBD II Symbol Description Notice
Left Underhood Fuse Block- RUN/CRK Fuse and IGN Relay
Figure 9:

Fuel Controls- EVAP Controls


Object Number: 785933  Size: FS
Master Electrical Component List
Evaporative Emission Control System Description
Device Controls
Fuel Controls- Fuel Injectors
OBD II Symbol Description Notice
Left Underhood Fuse Block- AIR SOL, C3I and IGNFD Fuses
Left Underhood Fuse Block- OXY SEN and SBM LCM Fuses
Left Underhood Fuse Block- OXY SEN and SBM LCM Fuses
Engine Data Sensors
Engine Data Sensors- 5 Volt and Low Reference
Figure 10:

Device Controls


Object Number: 785934  Size: FS
Master Electrical Component List
Secondary Air Injection System Description
Controlled/Monitored Subsystem References
Fuel Controls- EVAP Controls
OBD II Symbol Description Notice
Right Underhood Fuse Block- AIR PUMP, COOL FAN 1, AUX OTLT, and REARDEFOG Fuses
Left Underhood Fuse Block- AIR SOL, C3I and IGNFD Fuses
Engine Data Sensors
G105
Figure 11:

Controlled/Monitored Subsystem References


Object Number: 785935  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Transmission Controls
Device Controls
OBD II Symbol Description Notice
Compressor Control
Driver Information Center
Traction Control (w/NW9) and Variable Effort Steering (w/NV8)
Starter Motor Controls
Cooling Fan Controls
TCC/Cruise Release Switch
Figure 12:

Transmission Controls


Object Number: 785937  Size: FS
Master Electrical Component List
Powertrain Control Module Description
Controlled/Monitored Subsystem References
OBD II Symbol Description Notice
VSS and Automatic Transaxle Internal Mode Switch
4T65-E Automatic Transaxle Controls - Sensors
4T65-E Automatic Transaxle Controls - Solenoids, TCC/Cruise Release Switch