GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module
Table 2: Instrument Panel Cluster
Table 3: Powertrain Control Module

The scan tool data lists contain all the instrument panel, gages, and console related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. The data list column indicates the location of the parameter within the scan tool menu selections.

Use the scan tool data lists as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all of the diagnostic procedures with the Diagnostic System Check - Instrument Cluster , Diagnostic System Check - Driver Information Systems , or Diagnostic System Check - Audible Warnings .

Use the scan tool data lists only after the following is determined:

    • There is no published DTC procedure nor published symptom procedure for the customer concern.
    • The DTC or symptom procedure indicated by the diagnostic system check does not resolve the customer concern.

The typical data values are obtained from a properly operating vehicle under the conditions specified in the first row of the scan tool data list table. Comparison of the parameter values from the suspect vehicle with the typical data values may reveal the source of the customer concern.

Body Control Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Headlamps Off/Doors Closed/Trunk Closed/Park Brake Unapplied

Driver Door Open Sw.

Inputs

Open/Closed

Closed

Door Ajar Switches

Inputs

Open/Closed

Closed

Headlamp Switch

Inputs

Active/Inactive

Inactive

Key in Ignition

Inputs

Active/Inactive

Active

Park Brake Switch

Inputs

On/Off

Off

Parklamp Switch

Inputs

On/Off

Off

Instrument Panel Cluster

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Seat Belt Buckled/High Beams Off/Park Brake Unapplied

ABS Warning Lamp

Inputs

On/Off

Off

Air Bag Lamp

Inputs

On/Off

Off

Brake Lamp

Inputs

On/Off

Off

Cluster State

Module Information

Not Programmed/ Programmed

Programmed

Cruise Lamp

Inputs

On/Off

Off

English/Metric State

Module Information

English/Metric

varies

Hi Beam Lamp

Inputs

On/Off

Off

Hi Res. Speed Failed

Inputs

Yes/No

No

Ignition 1

Inputs

On/Off

On

Left Turn Signal

Inputs

On/Off

Off

Low Brake Fluid

Inputs

On/Off

Off

Low Brake Fluid Report

Inputs

Yes/No

No

Low Coolant Lamp

Inputs

On/Off

Off

Low Fuel Indicator Off

Data

Percent

23%

Low Fuel Indicator On

Data

Percent

13%

Low Fuel Indicator Time

Data

Counts

30

Low Res. Speed Failed

Inputs

Yes/No

No

Low Washer Lamp

Inputs

On/Off

Off

Odometer Msg. Failed

Inputs

Yes/No

No

PROM ID

Module Information

Numeric

varies

Right Turn Signal

Inputs

On/Off

Off

Seat Belt Status

Inputs

Buckled/Unbuckled

Buckled

Traction Off Lamp

Inputs

On/Off

Off

Trip Reset Switch

Inputs

Active/Inactive

Inactive

8 Digit Part Number

Module Information

Numeric

varies

Powertrain Control Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Engine Idling/Normal Operating Temperature

ECT Sensor

Engine Data 1

Engine Data 2

EVAP Data

Celsius (Fahrenheit)

85-105°C (185-220°F)

Engine Oil Level Switch

Engine Data 2

OK/Low

OK

Engine Oil Life Remaining

Engine Data 2

Percent

0-100%

(varies)

Engine Oil Pressure Switch

Engine Data 2

OK/Low

OK

Engine Speed

Engine Data 1

Engine Data 2

EVAP Data

RPM

±100 RPM from Desired Idle Speed

Fuel Tank Level Remaining

EVAP Data

Percent

0-100%

(varies)

Vehicle Speed Sensor

Engine Data 1

Engine Data 2

EVAP Data

kilometers per hour (miles per hour)

0 km/h (0 mph)