GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Engine Control Module (ECM)

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition OFF/Engine OFF/Vehicle is in Park or Neutral/Cruise On/Off Switch is Turned Off

Cruise Control Switch

Cruise Control Data

On / Off / Set / Resume / Error

Off

Engine Control Module (ECM)

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

Cruise / PTO / Traction Data

Applied / Released

Released

BPP Signal

Cruise / PTO / Traction Data

Applied / Released / Invalid

Released

Cruise Control Active

Cruise / PTO / Traction Data

Yes/No

No

Cruise Disengage (1-8) History

Cruise / PTO / Traction Data

Last reason for cruise control disengagement

Varies

Cruise Inhibited

Cruise / PTO / Traction Data

Yes/No

Yes

Cruise On/Off Switch

Cruise / PTO / Traction Data

On/Off

Off

Cruise Resume/Accel. Switch (3.6L)

Cruise / PTO / Traction Data

On/Off

Off

Cruise Resume/Accel. Switch (4.6L)

Cruise / PTO / Traction Data

Active / Inactive / Invalid

Inactive

Cruise Set/Coast Switch (3.6L)

Cruise / PTO / Traction Data

On/Off

Off

Cruise Set/Coast Switch (4.6L)

Cruise / PTO / Traction Data

Active / Inactive / Invalid

Inactive

Engine Speed

Cruise / PTO / Traction Data

RPM

650

Initial Brake Apply Signal (3.6L)

Cruise / PTO / Traction Data

Applied/Released

Released

Stoplamp Pedal Switch (3.6L)

Cruise / PTO / Traction Data

Applied/Released

Released

Traction Control Status

Cruise / PTO / Traction Data

Active/Inactive

Active

Vehicle Speed Sensor

Cruise / PTO / Traction Data

km/h (mph)

0