GM Service Manual Online
For 1990-2009 cars only
Table 1: Body and Accessories
Table 2: Engine

The scan tool data lists contain all of the cruise control 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 Diagnostic System Check - Vehicle .

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 and Accessories

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Idling at Normal Operating Temperature/Vehicle is in Park or Neutral/Cruise On/Off Switch is Turned Off

Battery Voltage Signal

BCM Data

Volts

Varies

Cruise Control Active

ECM Data

No/Yes

No

Cruise Control Switch

BCM Data

Off/On/Error/Resume/Set

Off

Cruise Control Switch

BCM Data

Volts

0 Volts

Cruise Disengage 1-8 History

ECM Data

The last reason for cruise control disengagement

Varies

Cruise On/Off Switch

ECM Data

On/Off

Off

Cruise Resume/Accel Switch

ECM Data

On/Off

Off

Cruise Set/Coast Switch

ECM Data

Active/Inactive/Invalid

Inactive

Engine Speed

ECM Data

RPM

Varies

Ignition 1 Signal

ECM Data

Volts

Varies

Vehicle Speed Sensor

ECM Data

km/h (mph)

0 km/h (0 mph)

Engine

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Idling at Normal Operating Temperature/Vehicle is in Park or Neutral/Cruise On/Off Switch is Turned Off

CPP Switch

Cruise Control Data

Applied/Released

Released

Cruise Control Active

Cruise Control Data

Yes/No

No

Cruise Disengage (1-8) History

Cruise Control Data

Last reason for cruise control disengagement

Varies

Cruise On/Off Switch

Cruise Control Data

On/Off

Off

Cruise Resume/Accel. Switch

Cruise Control Data

On/Off

Off

Cruise Set/Coast Switch

Cruise Control Data

Active/Inactive/Invalid

Inactive

Engine Speed

Cruise Control Data

RPM

Varies

Ignition 1 Signal

Cruise Control Data

Volts

Varies

Traction Control Status

TAC Data

Active/Inactive

Inactive

Vehicle Speed Sensor

Cruise Control Data

km/h (mph)

0

Table 1: Body Control Module
Table 2: Engine Control Module

The scan tool data lists contain all of the cruise control 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 Diagnostic System Check - Vehicle .

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 Idling at Normal Operating Temperature/Vehicle is in Park or Neutral/Cruise On/Off Switch is Turned Off

Battery Voltage Signal

Cruise Control Data

Volts

Varies

Cruise Control Switch

Cruise Control Data

On/ Off / Error / Resume / Set

Off

Cruise Control Switch

Cruise Control Data

Volts

0 Volts

Engine Control Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine Idling at Normal Operating Temperature/Vehicle is in Park or Neutral/Cruise On/Off Switch is Turned Off

BPP Circuit Signal (2.4L)

Cruise / Traction Data

Applied / Released

Released

BPP Signal (2.4L)

Cruise / Traction Data

Applied / Released / Invalid

Released

CPP Switch (If Equipped)

Cruise / Traction Data

Applied / Released

Released

Cruise Control Active

Cruise / Traction Data

Yes / No

No

Cruise Disengage (1-8) History

Cruise / Traction Data

Last reason for cruise control disengagement

Varies

Cruise Inhibit Reason (2.0L)

Cruise / Traction Data

Reason for cruise control inhibited

Varies

Cruise Inhibited (2.0L)

Cruise / Traction Data

Yes / No

No

Cruise On/Off Switch

Cruise / Traction Data

On/Off

Off

Cruise Resume/Accel. Switch

Cruise / Traction Data

Active / Inactive / Invalid

Inactive

Cruise Set/Coast Switch

Cruise / Traction Data

Active / Inactive / Invalid

Inactive

Engine Speed

Cruise / Traction Data

RPM

Varies

Stoplamp Pedal Switch (2.0L)

Cruise / Traction Data

Applied / Released

Released

Traction Control Status (2.0L)

Cruise / Traction Data

Active / Inactive

Inactive

Vehicle Speed Sensor

Cruise / Traction Data

km/h (mph)

0 km/h (0 mph)