G6 V6-3.6L (2007)
The engine control module (ECM) disengages the cruise control operation based on the signals from the following switches:
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The brake pedal position (BPP) sensor
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The clutch pedal position (CPP) sensor (3.9L with manual transmission only)
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The cruise control cancel switch
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The cruise control on/off switch
The body control module (BCM) monitors the signal circuit of the cruise control cancel switch. When the cancel switch is activated, the BCM detects a
high signal voltage on the cruise control cancel switch signal circuit. The BCM sends a GMLAN serial data message to the ECM in order to disengage
the cruise control system.
The BPP sensor is mounted on the brake pedal bracket. Pressing the brake pedal while the cruise control is engaged will disengage the cruise control
system. The body control module (BCM) monitors the BPP sensor via the BPP sensor signal circuit as the voltage signal increases while the pedal
reaches the fully applied position. The BCM sends a GMLAN serial data message to the ECM indicating the position of the brake pedal. For further
information on the BPP sensor, refer to Exterior Lighting Systems Description and Operation and Brake Pedal Position Sensor Calibration.
The CPP sensor is mounted on the clutch pedal bracket. Pressing the clutch pedal while the cruise control is engaged will disengage the cruise control
system. The engine control module (ECM) monitors the CPP sensor via the CPP sensor signal circuit as the voltage signal decreases while the pedal
reaches the fully applied position.
The cruise control system will disengage when the cruise control on/off switch is switched OFF.
The cruise control system will disengage when the ECM detects that a driver override function has been active for approximately 60 seconds.
When the cruise control system has been disengaged, the ECM sends a GMLAN serial message to the instrument panel cluster (IPC) in order to turn
OFF the Cruise indicator.
The vehicle speed stored in the memory of the ECM will be erased when the cruise control on/off button is turned OFF, or the ignition switch is turned
OFF.
Cruise Control Inhibited
The engine control module (ECM) inhibits the cruise control operation when any of the following conditions exist:
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The ECM has not detected a brake pedal activation from the body control module (BCM).
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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 9-16 volts.
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The Antilock Brake System (ABS)/Traction Control System (TCS) is active for more than 2 seconds.
