Grand Prix V6-3.8L (2007)
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The ECM detects the analog cruise control switch input is out of the normal voltage range.
TAC Inhibit
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The ECM detects a fault within the throttle actuator control (TAC) system.
TCS
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The ECM detects that the traction control system had been activated. It is also possible that a tire with low air pressure can also set this
disengagement reason.
Trans. DTC
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The ECM detects a transmission gear fault.
Under Set Speed
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The ECM detects that the vehicle speed is less than the cruise memory speed by more than a calibrated amount.
VSES
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The ECM detects that the vehicle stability enhancement system had been activated.
Scan Tool Data Definitions (Cruise Control)
Scan Tool Data Definitions (Cruise Control)
The Scan Tool Data Definitions contains a brief description of all cruise control related parameters available on the scan tool.
On vehicles equipped with a 3.8L engine, a powertrain control module (PCM) is used. On vehicles equipped with a 5.3L engine, and engine control
module (ECM) is used.
Cruise Cancel Switch
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The scan tool displays Active, Inactive or Invalid. The ECM determines the current status of cruise cancel switch. An active cruise cancel switch is
displayed as Active.
Cruise Control Active (3.8L)
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The scan tool displays Yes or No. The PCM determines the current status of cruise control operation. An active cruise control system is displayed
as Yes.
Cruise Control Active (5.3L)
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The scan tool displays Active, Inactive or Invalid. The ECM determines the current status of cruise control operation. An active cruise control
system is displayed as Active.
Cruise Disengage (1-8) History
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The scan tool displays the last 8 reasons why the cruise control system was disengaged. Refer to the Scan Tool Data Definitions (Disengaged
History) for descriptions.
Cruise On/Off Switch
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The scan tool displays On or Off. The ECM/PCM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A closed
switch is displayed as On.
Cruise Resume/Accel. Switch
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The scan tool displays On or Off. The PCM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A closed switch is
displayed as On. The cruise control On/Off switch must be switched On in order to correctly view the Cruise Resume/Accel. Switch parameter.
Cruise Resume/Accel. Switch
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The scan tool displays Active, Inactive or Invalid. The ECM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A
closed switch is displayed as Active. The cruise control On/Off switch must be switched On in order to correctly view the Cruise Resume/Accel.
Switch parameter.
Cruise Set/Coast Switch
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The scan tool displays On or Off. The PCM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A closed switch is
displayed as On. The cruise control On/Off switch must be switched On in order to correctly view the Cruise Set/Coast Switch parameter.
Cruise Set/Coast Switch
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The scan tool displays Active, Inactive or Invalid. The ECM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A
closed switch is displayed as Active. The cruise control On/Off switch must be switched On in order to correctly view the Cruise Set/Coast Switch
parameter.
