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

Power, Ground, MIL, and DLC


Object Number: 25316  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
Ignition Controls
Handling ESD Sensitive Parts Notice
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 2:

Ignition Controls


Object Number: 25361  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
Fuel Controls
Power, Ground, MIL, and DLC
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 3:

Fuel Controls


Object Number: 25369  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
Engine Data Sensors
Ignition Controls
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 4:

Engine Data Sensors


Object Number: 25387  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
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: 25390  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
Oxygen Sensors
Engine Data Sensors
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 6:

Oxygen Sensors


Object Number: 25336  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
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: 25392  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
VSS and Cruise Control
Oxygen Sensors
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 8:

VSS and Cruise Control


Object Number: 25344  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
Transaxle Controls (Solenoids)
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 (Solenoids)


Object Number: 25408  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
Transaxle Controls (Switches)
VSS and Cruise Control
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 10:

Transaxle Controls (Switches)


Object Number: 25477  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
A/C Controls
Transaxle Controls (Solenoids)
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 11:

A/C Controls


Object Number: 25351  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
Cooling Fan Controls
Transaxle Controls (Switches)
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice
Figure 12:

Cooling Fan Controls


Object Number: 25354  Size: FS
Engine Controls Components
Powertrain Control Module (PCM) General Description PCM
A/C Controls
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice