GM Service Manual Online
For 1990-2009 cars only
Table 1: Amplifier (AMP)
Table 2: Dash Integration Module (DIM)
Table 3: Digital Radio Receiver (DRR)
Table 4: Driver Door Switch
Table 5: Drivers Door Module
Table 6: Engine Control Module (ECM) 3.6L (LY7)
Table 7: Engine Control Module (ECM) 4.6L (LH2)
Table 8: Instrument Panel Cluster (IPC)
Table 9: Left Rear Door Module
Table 10: Memory Seat Module (MSM)
Table 11: Right Rear Door Module
Table 12: Rear Integration Mode (RIM)
Table 13: Rear Seat Module
Table 14: Vehicle Theft Deterrent (VTD)
Table 15: Passenger Door Module
Table 16: Sensing Diagnostic Module (SDM)
Table 17: Transmission Control Module (TCM)

Amplifier (AMP)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Engine Electrical

Volts

13.9 Volts


Dash Integration Module (DIM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition OFF/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Digital Radio Receiver (DRR)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Driver Door Switch

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery Voltage

Data Display

Volts

13.9 Volts


Drivers Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Engine Control Module (ECM) 3.6L (LY7)

San Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF

Crank Request Signal

Electrical

Yes/No

No

GEN F-Terminal Signal

Electrical/Theft Deterrent Data

%

0%

GEN L-Terminal Signal Command

Electrical/Theft Deterrent Data

%

Varies

Ignition 1 Signal

Electrical/Theft Deterrent Data

0-25.5 V

12.8-14.2 V

Ignition 1 Signal

Electrical/Theft Deterrent Data

On/Off

Off

Park/Neutral Position Switch

Electrical/Theft Deterrent Data

Park/Neutral/In Gear

Park

Starter Relay Command

Electrical/Theft Deterrent Data

On/Off

Off

Starter Relay Circuit Status

Electrical/Theft Deterrent Data

Fault/Indeterminate/OK

OK

APP Indicated Angle

Electrical/Theft Deterrent Data

0-100%

0.0

ECT Sensor

Electrical/Theft Deterrent Data

°C/°F

Varies

Brake Pedal Signal Status

Electrical/Theft Deterrent Data

Valid/Invalid

Valid

Clutch Start Switch (If equipped)

Electrical/Theft Deterrent Data

Applied/Released

Depending on clutch pedal position

EC Ignition Relay Circuit

Electrical/Theft Deterrent Data

OK/Faulty/Indeterminate

OK

EC Ignition Relay Command

Electrical/Theft Deterrent Data

On/Off

ON

EC Ignition Relay Feedback Signal

Electrical/Theft Deterrent Data

0-25.5 V

12.0-14.5 V

Engine Oil Pressure Sensor

Electrical/Theft Deterrent Data

kPa (psi)

Varies

Engine Speed

Electrical/Theft Deterrent Data

RPM

650 RPM

Ignition 0 Signal

Electrical/Theft Deterrent Data

On/Off

ON

Initial Brake Apply Signal

Electrical/Theft Deterrent Data

Applied/Released

Released

MIL Requested by DTC

Electrical/Theft Deterrent Data

Yes/No

No

Stop Lamp Pedal Switch

Electrical/Theft Deterrent Data

Applied/Released

Released

System Power Mode

Electrical/Theft Deterrent Data

Off, Accessory, RAP, Run, or Crank Request

Run

Vehicle Speed Sensor

Electrical/Theft Deterrent Data

km/miles

Varies


Engine Control Module (ECM) 4.6L (LH2)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF

Crank Request Signal

Electrical/Theft Deterrent Data

Yes/No

No

GEN F-Terminal Signal

Electrical/Theft Deterrent Data

%

%

GEN L-Terminal Circuit Status

Electrical/Theft Deterrent Data

OK/Incomplete/Short to B+/Short to Ground/Open

OK

GEN L-Terminal Signal Command

Electrical/Theft Deterrent Data

%

0%

Ignition 1 Signal

Electrical/Theft Deterrent Data

Volts

Varies

Park/Neutral Position Switch

Electrical/Theft Deterrent Data

Park/Neutral/In Gear

Park

Starter Relay Command

Electrical/Theft Deterrent Data

On/Off

Off

Starter Relay Circuit Status

Electrical/Theft Deterrent Data

Fault/Indeterminate/OK

OK

APP Indicated Angle

Electrical/Theft Deterrent Data

0-100%

0.0

BPP Circuit Signal

Electrical/Theft Deterrent Data

Applied/Released

Released

BPP Signal

Electrical/Theft Deterrent Data

Applied/Released/Invalid

Released

EC Ignition Relay Circuit Status

Electrical/Theft Deterrent Data

OK/Incomplete/Short to B+/Short to Ground/Open

OK

EC Ignition Relay Command

Electrical/Theft Deterrent Data

On/Off

On

EC Ignition Relay Feedback Signal

Electrical/Theft Deterrent Data

Volts

13.5 V

ECT Sensor

Electrical/Theft Deterrent Data

°C/°F

Varies

Engine Oil Pressure Sensor

Electrical/Theft Deterrent Data

kPa/psi

Varies

Engine Speed

Electrical/Theft Deterrent Data

RPM

650 RPM

Ignition Accessory Signal

Electrical/Theft Deterrent Data

On/Off

On

MIL Requested by DTC

Electrical/Theft Deterrent Data

Yes/No

No

Remote Vehicle Start (RVS) Disabled, History DTC (1-8)

Electrical/Theft Deterrent Data

Vehicle Remote Start Disabled (Reason)

Varies

Remote Vehicle Start (RVS) Request Signal

Electrical/Theft Deterrent Data

Yes/No

No

Vehicle Speed Sensor

Electrical/Theft Deterrent Data

km/miles

Varies


Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Left Rear Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Memory Seat Module (MSM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Right Rear Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Rear Integration Mode (RIM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Rear Seat Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Vehicle Theft Deterrent (VTD)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

12.0 Volts

Start Disabled

Data Display

Yes/No

Yes


Passenger Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Sensing Diagnostic Module (SDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts


Transmission Control Module (TCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Transmission in Park

IMS

Engine Electrical

Park, Park/Reverse, Reverse, Reverse/Neutral, Neutral, Neutral/Drive 4, Drive 4, Drive 4/Drive 3, Drive 3, Drive 3/Drive 2, Drive 2, Drive 2/Drive 1, Drive 1, INVALID, OPEN

Park