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

CHECK GAGES (MIL), ECT Switch, MFAM, PCM and SERVICE ENGINE SOON Indicator


Object Number: 295408  Size: FS
Engine Controls Components
ECT, EOP and Low Coolant Switches, MFAM and Stoplamps Switch INTERFAcE MODUle
Handling ESD Sensitive Parts Notice
Figure 2:

ECT, EOP and Low Coolant Switches, MFAM and Stoplamps Switch Interface Module


Object Number: 295409  Size: FS
Engine Controls Components
Data Link Connector
CHECK GAGES (MIL), ECT Switch, MFAM, PCM and SERVICE ENGINE SOON Indicator
Handling ESD Sensitive Parts Notice
Figure 3:

Data Link Connector


Object Number: 295411  Size: FS
Engine Controls Components
Power and Ground, IGN 3 Relay and Fuel Heater
ECT, EOP and Low Coolant Switches, MFAM and Stoplamps Switch INTERFAcE MODUle
Handling ESD Sensitive Parts Notice
Engine Controls Schematic Icons
Figure 4:

Power and Ground, IGN 3 Relay and Fuel Heater


Object Number: 295413  Size: FS
Engine Controls Components
Air Intake Heater, INTAKE HEATER Indicator, Connector C127 and Ignition Relay
Data Link Connector
Figure 5:

Air Intake Heater, INTAKE HEATER Indicator, Connector C127 and Ignition Relay


Object Number: 295414  Size: FS
Engine Controls Components
PCM, Speedo Adapter, Speedometer and Vehicle Speed Sensor
Power and Ground, IGN 3 Relay and Fuel Heater
Figure 6:

PCM, Speedo Adapter, Speedometer and Vehicle Speed Sensor


Object Number: 295416  Size: FS
Engine Controls Components
ECT and EOP Gauges and Sensors, Generator, Generator Charge and HI IDLE Indicators and PCM
Air Intake Heater, INTAKE HEATER Indicator, Connector C127 and Ignition Relay
Handling ESD Sensitive Parts Notice
Figure 7:

ECT and EOP Gauges and Sensors, Generator, Generator Charge and HI IDLE Indicators and PCM


Object Number: 295418  Size: FS
Engine Controls Components
EBCM, Engine Exhaust Brake/ Air Interlock Relay, Switch and Solenoid Valve, and PCM
PCM, Speedo Adapter, Speedometer and Vehicle Speed Sensor
Handling ESD Sensitive Parts Notice
Figure 8:

EBCM, Engine Exhaust Brake/ Air Interlock Relay, Switch and Solenoid Valve, and PCM


Object Number: 295420  Size: FS
Engine Controls Components
MFAM, PCM, Stoplamps Switch, and Upfitter Connector
ECT and EOP Gauges and Sensors, Generator, Generator Charge and HI IDLE Indicators and PCM
Handling ESD Sensitive Parts Notice
Figure 9:

MFAM, PCM, Stoplamps Switch, and Upfitter Connector


Object Number: 295423  Size: FS
Engine Controls Components
Accelerator Pedal, Clutch Pedal Position, Cruise Control, HI IDLE and Stoplamps Switches, EBCM and PCM,
EBCM, Engine Exhaust Brake/ Air Interlock Relay, Switch and Solenoid Valve, and PCM
Handling ESD Sensitive Parts Notice
Figure 10:

Accelerator Pedal, Clutch Pedal Position, Cruise Control, HI IDLE and Stoplamps Switches, EBCM and PCM,


Object Number: 295424  Size: FS
Engine Controls Components
A/T Modulator, Relay and Shift Selector Control, IGN Relay and PCM
MFAM, PCM, Stoplamps Switch, and Upfitter Connector
Handling ESD Sensitive Parts Notice
Figure 11:

A/T Modulator, Relay and Shift Selector Control, IGN Relay and PCM


Object Number: 295425  Size: FS
Engine Controls Components
Accelerator Pedal, Clutch Pedal Position, Cruise Control, HI IDLE and Stoplamps Switches, EBCM and PCM,
Handling ESD Sensitive Parts Notice