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

Power, Ground, MIL, DLC


Object Number: 141963  Size: FS
Engine Controls Components
Powertrain Control Module Description
Ignition System, Knock Sensors
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Data Link Connector Schematics
Instrument Cluster: Analog Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 2:

Ignition System, Knock Sensors


Object Number: 141969  Size: FS
Engine Controls Components
Powertrain Control Module Description
Fuel Control
Power, Ground, MIL, DLC
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Power Distribution Schematics
Figure 3:

Fuel Control


Object Number: 141973  Size: FS
Engine Controls Components
Powertrain Control Module Description
Fuel Injectors
Ignition System, Knock Sensors
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematics
Engine Controls Schematics
Power Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 4:

Fuel Injectors


Object Number: 141975  Size: FS
Engine Controls Components
Powertrain Control Module Description
Indicator Lamps
Fuel Control
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Figure 5:

Indicator Lamps


Object Number: 141977  Size: FS
Engine Controls Components
Powertrain Control Module Description
Engine Data Sensors-A/C Refrig Press, TP, MAP, ECT, IAT
Fuel Injectors
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Data Link Connector Schematics
Instrument Cluster: Analog Schematics
Power Distribution Schematics
Figure 6:

Engine Data Sensors-A/C Refrig Press, TP, MAP, ECT, IAT


Object Number: 141978  Size: FS
Engine Controls Components
Powertrain Control Module Description
Engine Data Sensors-MAF, EVAP Vent, EVAP Purge, EGR
Indicator Lamps
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematics
Engine Controls Schematics
Engine Controls Schematics
Figure 7:

Engine Data Sensors-MAF, EVAP Vent, EVAP Purge, EGR


Object Number: 141979  Size: FS
Engine Controls Components
Powertrain Control Module Description
Engine Data Sensors-HO2S #1, HO2S #2
Engine Data Sensors-A/C Refrig Press, TP, MAP, ECT, IAT
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematics
Power Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 8:

Engine Data Sensors-HO2S #1, HO2S #2


Object Number: 141980  Size: FS
Engine Controls Components
Powertrain Control Module Description
VSS, Cruise
Engine Data Sensors-MAF, EVAP Vent, EVAP Purge, EGR
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Power Distribution Schematics
Ground Distribution Schematics
Figure 9:

VSS, Cruise


Object Number: 141981  Size: FS
Engine Controls Components
Powertrain Control Module Description
Transaxle Range Switch
Engine Data Sensors-HO2S #1, HO2S #2
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Figure 10:

Transaxle Range Switch


Object Number: 141984  Size: FS
Engine Controls Components
Powertrain Control Module Description
IAC Valve, Engine Oil Level Switch, Engine Oil Pressure Switch
VSS, Cruise
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Shift Lock Control Schematics
Power Distribution Schematics
Power Distribution Schematics
Ground Distribution Schematics
Figure 11:

IAC Valve, Engine Oil Level Switch, Engine Oil Pressure Switch


Object Number: 141986  Size: FS
Engine Controls Components
Powertrain Control Module Description
Automatic Transaxle (4T65-E) part 1, TCC Switch
Transaxle Range Switch
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Ground Distribution Schematics
Ground Distribution Schematics
Figure 12:

Automatic Transaxle (4T65-E) part 1, TCC Switch


Object Number: 141988  Size: FS
Engine Controls Components
Powertrain Control Module Description
Automatic Transaxle (4T65-E) part 2
IAC Valve, Engine Oil Level Switch, Engine Oil Pressure Switch
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Engine Controls Schematics
Power Distribution Schematics
Power Distribution Schematics
Figure 13:

Automatic Transaxle (4T65-E) part 2


Object Number: 141991  Size: FS
Engine Controls Components
Powertrain Control Module Description
A/C Compressor Controls
Automatic Transaxle (4T65-E) part 1, TCC Switch
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Figure 14:

A/C Compressor Controls


Object Number: 141993  Size: FS
Engine Controls Components
Powertrain Control Module Description
Coolant Fans
Automatic Transaxle (4T65-E) part 2
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 15:

Coolant Fans


Object Number: 141995  Size: FS
Engine Controls Components
Powertrain Control Module Description
A/C Compressor Controls
OBDII Symbol Description Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Handling Electrostatic Discharge Sensitive Parts Notice
Power Distribution Schematics
Ground Distribution Schematics