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

Engine Grounds, Serial Data, MIL Control


Object Number: 23173  Size: FS
Engine Controls Components
Data Link Connector Diagnosis
Ignition Control Module
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 2:

Ignition Control Module


Object Number: 23179  Size: FS
Engine Controls Components
Electronic Ignition (EI) System
Engine Grounds, Serial Data, MIL Control
Fuel Injectors Control
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 3:

Fuel Pump Control


Object Number: 23100  Size: FS
Engine Controls Components
Fuel Pump Electrical Circuit Diagnosis
A/C Pressure, TP, MAP, ECT, IAT Sensors
Fuel Injectors Control
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 4:

Fuel Injectors Control


Object Number: 23185  Size: FS
Engine Controls Components
Fuel System Diagnosis
Fuel Pump Control
Ignition Control Module
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 5:

A/C Presure, TP, MAP, ECT, IAT Sensors


Object Number: 23189  Size: FS
Engine Controls Components
Information Sensors
MAF Sensor, EVAP System EGR Valve
Fuel Pump Control
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 6:

MAF Sensor, EVAP System EGR Vavle


Object Number: 23192  Size: FS
Engine Controls Components
Information Sensors
HO2S Sensors
A/C Pressure, TP, MAP, ECT, IAT Sensors
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 7:

HO2S Sensors


Object Number: 23112  Size: FS
Engine Controls Components
Information Sensors
IAC Valve, Trans Range
MAF Sensor, EVAP System EGR Valve
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 8:

IAC Valve, Trans Range


Object Number: 36170  Size: FS
Engine Controls Components
Information Sensors
VSS, Cruise Control Module
HO2S Sensors
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 9:

VSS, Cruise Control Module


Object Number: 23204  Size: FS
Engine Controls Components
Information Sensors
TCC Brake Switch, TCC Solenoid
IAC Valve, Trans Range
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 10:

TCC Brake Switch, TCC Solenoid


Object Number: 23209  Size: FS
Engine Controls Components
Information Sensors
GEN Control, Low Oil Lamp, Volts Lamp
VSS, Cruise Control Module
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 11:

GEN Control, Low Oil Lamp, Volts Lamp


Object Number: 23213  Size: FS
Engine Controls Components
Powertrain Control Module Controlled Warning Lamps Diagnosis
A/C Control
TCC Brake Switch, TCC Solenoid
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 12:

A/C Control


Object Number: 29193  Size: FS
Engine Controls Components
Powertrain Control Module Controlled Air Conditioning (A/C) Circuit Diagnosis
Cooling Fans
GEN Control, Low Oil Lamp, Volts Lamp
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 13:

Cooling Fans


Object Number: 29194  Size: FS
Engine Controls Components
Electric Cooling Fan Diagnosis
A/C Control
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice