GM Service Manual Online
For 1990-2009 cars only

Amplifier (AMP)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts

Digital Radio Receiver (DRR)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts

Drivers Door Switch

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts

Drivers Door Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts

Engine Control Module (ECM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Crank Request Signal

Engine Data 3

Yes/No

No

GEN F-Terminal Signal

Engine Data 2

%

0%

GEN L-Terminal Signal Command

Engine Data 2

On/Off

Off

Ignition 1 Signal

Engine Data 2

Volts

12.6 Volts

Starter Relay Command

Engine Data 3

On/Off

Off

Starter Relay Control Circuit

Engine Data 3

OK/Fault

OK

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

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

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

Ignition ON/Engine Running

Battery Voltage

Data Display

Volts

13.9 Volts

Rear Integration Module (RIM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

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

Ignition Cranking

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

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

Ignition ON/Engine Running

Battery Voltage Signal

Data Display

Volts

13.9 Volts

Transmission Control Module (TCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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