GM Service Manual Online
For 1990-2009 cars only
Table 1: Powertrain Control Module - 3.5L
Table 2: Engine Control Module - 3.6L

Powertrain Control Module - 3.5L

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

Cruise Control Active

Cruise/Traction Data

Yes/No

No

Cruise On/Off Switch

Cruise/Traction Data

On/Off

Off

Cruise Resume/Accel. Switch

Cruise/Traction Data

On/Off

Off

Cruise Set/Coast Switch

Cruise/Traction Data

On/Off

Off

Engine Speed

Cruise/Traction Data

RPM

Varies

Stoplamp Pedal Switch

Cruise/Traction Data

Applied/Released

Released

Stoplamp Pedal Switch Signal

Cruise/Traction Data

Volts

Varies

TAC Stoplamp Pedal Switch

Cruise/Traction Data

Applied/Released

Released

Traction Control Status

Cruise/Traction Data

Active/Inactive

Inactive

Vehicle Speed Sensor

Cruise/Traction Data

km/h (mph)

0

Engine Control Module - 3.6L

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

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

Cruise/Traction Data

Varies

OFF

Cruise On/Off Switch

Cruise/Traction Data

On/Off

Off

Cruise Resume/Accel. Switch

Cruise/Traction Data

On/Off

Off

Cruise Set/Coast Switch

Cruise/Traction Data

On/Off

Off

Engine Speed

Cruise/Traction Data

RPM

Varies

Stoplamp Pedal Switch

Cruise/Traction Data

Applied/Released

Released

TCC Brake Pedal Switch

Cruise/Traction Data

Applied/Released

Released

Traction Control Status

Cruise/Traction Data

Active/Inactive

Inactive

Vehicle Speed Sensor

Cruise/Traction Data

km/h (mph)

0 km/h (0 mph)