Grand Prix V8-5.3L (2007)
System. The BCM monitors the brake pedal position sensor via the brake pedal position sensor signal circuit. The ECM detects a high voltage signal on
stop lamp switch signal circuit from the BCM indicating that the brake pedal has been pressed. For further information on the brake pedal position
sensor, refer to Exterior Lighting Systems Description and Operation.
When the cruise control ON/OFF switch is turned OFF, the switch closes and the ECM detects zero voltage on the cruise control cruise control set/coast
and resume/accel switch signal circuit indicating that the ON/OFF switch is OFF.
When Cruise Control System has been disengaged, the ECM sends a class 2 message to the driver information center (DIC) in order to deactivate the
CRUISE SET message. The ECM also sends a class 2 message to the instrument panel cluster (IPC) in order to turn off the Cruise indicator.
The vehicle speed stored in the memory of the throttle actuator control (TAC) module will be erased when the OFF button is activated, or the ignition
switch is turned OFF.
The Cruise Control System will disengage when the ECM detects that a driver override function has been active for approximately 60 seconds.
Cruise Control Inhibited
The engine control module (ECM) inhibits the cruise control operation when any of the following conditions exist:
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A Cruise Control System DTC has been set.
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The vehicle speed is less than 40.2 km/h (25 mph).
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The vehicle speed is too high.
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The vehicle is in PARK, REVERSE, NEUTRAL, or 1st gear.
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The engine RPM is too low.
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The engine RPM is too high.
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The system voltage is not between 9 volts and 16 volts.
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The Antilock Brake System (ABS)/Traction Control System (TCS) is active for more than 2 seconds.