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

Power, Ground and MIL


Object Number: 626116  Size: FS
Engine Controls Components
Powertrain Control Module Description
Data Link Connector (DLC)
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 2:

Data Link Connector (DLC)


Object Number: 626123  Size: FS
Engine Controls Components
Powertrain Control Module Description
Ignition Control Module
Power, Ground and MIL
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 3:

Ignition Control Module


Object Number: 626124  Size: FS
Engine Controls Components
Electronic Ignition (EI) System Description
Fuel System
Data Link Connector (DLC)
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 4:

Fuel System


Object Number: 626125  Size: FS
Engine Controls Components
Fuel Supply Component Description
Information Sensors
Ignition Control Module
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Figure 5:

Information Sensors


Object Number: 626126  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Fuel Injectors
Fuel System
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 6:

Fuel Injectors


Object Number: 626127  Size: FS
Engine Controls Components
Fuel Metering System Component Description
Heated Oxygen Sensors
Information Sensors
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Figure 7:

Heated Oxygen Sensors


Object Number: 626128  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Rough Road, Generator and IAC
Fuel Injectors
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Figure 8:

Rough Road, Generator and IAC


Object Number: 626130  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Tach, Clutch Switch, VSS Output and VSS Signal
Heated Oxygen Sensors
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Figure 9:

Tach, Clutch Switch, VSS Output and VSS Signal


Object Number: 626132  Size: FS
Engine Controls Components
Information Sensors/Switches Description
EVAP and ECT
Rough Road, Generator and IAC
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Figure 10:

EVAP and ECT


Object Number: 626134  Size: FS
Engine Controls Components
Evaporative Emission Control System Operation Description
A/C System
Tach, Clutch Switch, VSS Output and VSS Signal
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Figure 11:

A/C System


Object Number: 626136  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Engine Cooling Fans
EVAP and ECT
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice
Figure 12:

Engine Cooling Fans


Object Number: 626137  Size: FS
Engine Controls Components
Engine Cooling Fan Description - Electric
A/C System
OBD II Symbol Description Notice
Powertrain Control Module Connector End Views
Handling ESD Sensitive Parts Notice