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

Power, Ground, MIL, and DLC


Object Number: 28044  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
Ignition Controls
Handling ESD Sensitive Parts Notice
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 2:

Ignition Controls


Object Number: 28045  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
Fuel Controls
Power, Ground, MIL, and DLC
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 3:

Fuel Controls


Object Number: 28049  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
Engine Data Sensors
Ignition Controls
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 4:

Engine Data Sensors


Object Number: 28050  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
EVAP and EGR Controls
Fuel Controls
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 5:

EVAP and EGR Controls


Object Number: 28051  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
Oxygen Sensors
Engine Data Sensors
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 6:

Oxygen Sensors


Object Number: 28052  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
IAC Valve, Generator, TR, Oil and Coolant Switches
EVAP and EGR Controls
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 7:

IAC Valve, Generator, TR, Oil and Coolant Switches


Object Number: 28053  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
VSS and Cruise Control
Oxygen Sensors
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 8:

VSS and Cruise Control


Object Number: 28054  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
Transaxle Controls
IAC Valve, Generator, TR, Oil and Coolant Switches
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 9:

Transaxle Controls


Object Number: 28056  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
A/C Controls
VSS and Cruise Control
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 10:

A/C Controls


Object Number: 28058  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
Cooling Fan Controls
Transaxle Controls
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 11:

Cooling Fan Controls


Object Number: 28059  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description
A/C Controls
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice