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

PCM Power and Ground


Object Number: 561242  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
MIL and Data Link Connector (DLC)
Underhood Fuse Block, PCM, ABS, HAZARD, FUEL PUMP, PARKLMP Fuses And Fuel Pump Relay
Underhood Fuse Block, PCM, SDM and INJ Fuses
Underhood Fuse Block, CRANK, PCM/CRUISE AND SBM Fuses
Underhood Fuse Block, CRANK, PCM/CRUISE AND SBM Fuses
Handling ESD Sensitive Parts Notice
G100, G101, G102, G103
Figure 2:

MIL and Data Link Connector (DLC)


Object Number: 561243  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Ignition Control
PCM Power and Ground
Underhood Fuse Block, OXYGEN SENSOR and IGN-1 Fuses
Underhood Fuse Block, BAT 1 Fuse/Rear Fuse Block, RDM, C/LTR, DDM, HTDST L and TRK REL Fuses/ IP Fuse Block, PDM, SBM and CSTR/SBM Fuses
Underhood Fuse Block, BAT 1 Fuse/Rear Fuse Block, RDM, C/LTR, DDM, HTDST L and TRK REL Fuses/ IP Fuse Block, PDM, SBM and CSTR/SBM Fuses
Underhood Fuse Block, OXYGEN SENSOR and IGN-1 Fuses
Underhood Fuse Block, OXYGEN SENSOR and IGN-1 Fuses
Power, Ground, Class 2
Handling ESD Sensitive Parts Notice
Class 2 Serial Data Line
Handling ESD Sensitive Parts Notice
Figure 3:

Ignition Control


Object Number: 561245  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Fuel Control, L36
MIL and Data Link Connector (DLC)
Underhood Fuse Block, AIR SOLENOID, C3I and TRANS/EGR Fuses
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 4:

Fuel Contol, L36


Object Number: 561260  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Fuel Control, L67
Ignition Control
Underhood Fuse Block, PCM, ABS, HAZARD, FUEL PUMP, PARKLMP Fuses And Fuel Pump Relay
G100, G101, G102, G103
G400, 1 of 2
Handling ESD Sensitive Parts Notice
Figure 5:

Fuel Contol, L67


Object Number: 561262  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Fuel Injectors
Fuel Control, L36
Underhood Fuse Block, PCM, ABS, HAZARD, FUEL PUMP, PARKLMP Fuses And Fuel Pump Relay
Underhood Fuse Block, TURN, A/C Fuses and A/C Relay
Handling ESD Sensitive Parts Notice
G400, 1 of 2
G100, G101, G102, G103
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 6:

Fuel Injectors


Object Number: 561264  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Transaxle Solenoids and ABS/TCC Switch
Fuel Control, L67
Underhood Fuse Block, PCM, SDM and INJ Fuses
Handling ESD Sensitive Parts Notice
Figure 7:

Transaxle Solenoids and ABS/TCC Switch


Object Number: 561265  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Sensors
Fuel Injectors
Underhood Fuse Block, AIR SOLENOID, C3I and TRANS/EGR Fuses
Underhood Fuse Block, AIR SOLENOID, C3I and TRANS/EGR Fuses
ABS/TCC Switch
Handling ESD Sensitive Parts Notice
Figure 8:

Sensors


Object Number: 561266  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Fuel Tank Pressure Sensor, EVAP Vent Valve
Transaxle Solenoids and ABS/TCC Switch
Handling ESD Sensitive Parts Notice
Fuel Tank Pressure Sensor, EVAP Vent Valve
EGR and EVAP Purge Valve
Fuel Tank Pressure Sensor, EVAP Vent Valve
Transaxle Sensors
Handling ESD Sensitive Parts Notice
Figure 9:

Fuel Tank Pressure Sensor, EVAP Vent Valve


Object Number: 561267  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Heated Oxygen Sensors
Sensors
Underhood Fuse Block, OXYGEN SENSOR and IGN-1 Fuses
Handling ESD Sensitive Parts Notice
Underhood Fuse Block, OXYGEN SENSOR and IGN-1 Fuses
Sensors
Sensors
Handling ESD Sensitive Parts Notice
Figure 10:

Heated Oxygen Sensors


Object Number: 561270  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
MAF, IAC, and Knock Sensors
Fuel Tank Pressure Sensor, EVAP Vent Valve
Underhood Fuse Block, OXYGEN SENSOR and IGN-1 Fuses
Handling ESD Sensitive Parts Notice
G100, G101, G102, G103
Figure 11:

MAF, IAC, and Knock Sensors


Object Number: 561275  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Cruise Control Module and VSS Control
Heated Oxygen Sensors
Underhood Fuse Block, PCM, SDM and INJ Fuses
Underhood Fuse Block, PCM, SDM and INJ Fuses
G100, G101, G102, G103
Handling ESD Sensitive Parts Notice
Figure 12:

Cruise Control Module and VSS Control


Object Number: 561277  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
EGR and EVAP Purge Valve
MAF, IAC, and Knock Sensors
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 13:

EGR and EVAP Purge Valve


Object Number: 561283  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
EBCM, Generator, Engine Oil Level Switch
Cruise Control Module and VSS Control
Underhood Fuse Block, AIR SOLENOID, C3I and TRANS/EGR Fuses
Sensors
Handling ESD Sensitive Parts Notice
Figure 14:

EBCM, Generator, Engine Oil Level Switch


Object Number: 561288  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Transaxle Sensors
EGR and EVAP Purge Valve
Handling ESD Sensitive Parts Notice
G100, G101, G102, G103
G202, 1 of 4
Handling ESD Sensitive Parts Notice
Figure 15:

Transaxle Sensors


Object Number: 561290  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Park/Neutral Position (PNP) Switch and VSS
EBCM, Generator, Engine Oil Level Switch
Handling ESD Sensitive Parts Notice
Sensors
Handling ESD Sensitive Parts Notice
Figure 16:

Park/Neutral Position (PNP) Switch and VSS


Object Number: 561292  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
A/C Clutch Control
Transaxle Sensors
Handling ESD Sensitive Parts Notice
G100, G101, G102, G103
Figure 17:

A/C Clutch Control


Object Number: 561295  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Engine Cooling Fan Motor Controls
Park/Neutral Position (PNP) Switch and VSS
Underhood Fuse Block, TURN, A/C Fuses and A/C Relay
Underhood Fuse Block, TURN, A/C Fuses and A/C Relay
Handling ESD Sensitive Parts Notice
Figure 18:

Engine Cooling Fan Motor Controls


Object Number: 561297  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Air Pump Motor and Vacuum Valve Solenoid, NC8 Only
A/C Clutch Control
Handling ESD Sensitive Parts Notice
G105
Figure 19:

Air Pump Motor and Vacuum Valve Solenoid, NC8 Only


Object Number: 561312  Size: FS
Engine Controls Components
Powertrain Control Module Description
OBD II Symbol Description Notice
Engine Cooling Fan Motor Controls
Underhood Maxi-Fuse Block, AIR PUMP, HI FAN, AUX PWR, and REARDEFOG Fuses
Underhood Fuse Block, AIR SOLENOID, C3I and TRANS/EGR Fuses
Handling ESD Sensitive Parts Notice
G105