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

Cell 23: PWR, GND and DLC


Object Number: 174980  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: Ignition Controls
OBD II Symbol Description Notice
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Fuse Block Schematics
Fuse Block Schematics
Fuse Block Schematics
Fuse Block Schematics
Fuse Block Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Instrument Cluster: Analog Schematics
Figure 2:

Cell 23: Ignition Controls


Object Number: 174981  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: Fuel Pump Controls
Cell 23: PWR, GND and DLC
OBD II Symbol Description Notice
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Fuse Block Schematics
Ground Distribution Schematics
Figure 3:

Cell 23: Fuel Pump Controls


Object Number: 174983  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: Fuel Injector Controls
Cell 23: Ignition Controls
OBD II Symbol Description Notice
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Fuse Block Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 4:

Cell 23: Fuel Injector Controls


Object Number: 174985  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: Sensor Controls
Cell 23: Fuel Pump Controls
OBD II Symbol Description Notice
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Fuse Block Schematics
Figure 5:

Cell 23: Sensor Controls


Object Number: 174991  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: EGR and EVAP Controls
Cell 23: Fuel Injector Controls
OBD II Symbol Description Notice
VCM Connector End Views
Cell 23: EGR and EVAP Controls
Cell 23: EGR and EVAP Controls
Cell 23: 4L80-E Transmission Switch Controls
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Instrument Cluster: Analog Schematics
Figure 6:

Cell 23: EGR and EVAP Controls


Object Number: 174994  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: Oxygen Sensor Controls
Cell 23: Sensor Controls
OBD II Symbol Description Notice
VCM Connector End Views
Cell 23: Sensor Controls
Cell 23: Sensor Controls
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Instrument Cluster: Analog Schematics
Fuse Block Schematics
Ground Distribution Schematics
Figure 7:

Cell 23: Oxygen Sensor Controls


Object Number: 174995  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: Vehicle Speed Sensor and Cruise Control
Cell 23: EGR and EVAP Controls
OBD II Symbol Description Notice
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Fuse Block Schematics
Fuse Block Schematics
Ground Distribution Schematics
Ground Distribution Schematics
Figure 8:

Cell 23: Vehicle Speed Sensor and Cruise Control


Object Number: 174997  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: Secondary AIR Controls
Oxygen Sensor Controls 7.4L
OBD II Symbol Description Notice
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Steering Assist Schematics
Figure 9:

Cell 23: Secondary AIR Controls


Object Number: 174999  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: 4L80-E Transmission Solenoid Controls
Cell 23: Vehicle Speed Sensor and Cruise Control
OBD II Symbol Description Notice
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Fuse Block Schematics
Power Distribution Schematics
Figure 10:

Cell 23: 4L80-E Transmission Solenoid Controls


Object Number: 175002  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: 4L80-E Transmission Switch Controls
Cell 23: Secondary AIR Controls
OBD II Symbol Description Notice
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Fuse Block Schematics
Fuse Block Schematics
Cruise Control Schematics
Antilock Brake System Schematics
Figure 11:

Cell 23: 4L80-E Transmission Switch Controls


Object Number: 175005  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: A/C Controls
Cell 23: 4L80-E Transmission Solenoid Controls
OBD II Symbol Description Notice
VCM Connector End Views
Cell 23: Sensor Controls
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Figure 12:

Cell 23: A/C Controls


Object Number: 175007  Size: FS
Engine Controls Components
Information Sensors/Switches Description
Cell 23: 4L80-E Transmission Switch Controls
VCM Connector End Views
Handling ESD Sensitive Parts Notice
Power Distribution Schematics
Power Distribution Schematics
Power Distribution Schematics
Fuse Block Schematics
Ground Distribution Schematics
Ground Distribution Schematics
OBD II Symbol Description Notice