Cruise Control Disengaged

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

The engine control module (ECM)/powertrain control module (PCM) disengages the cruise control operation based on the signals from the following switches:

The stop lamp switch
The cruise control release switch
The clutch top-of-travel (TOT) switch (if equipped)
The cruise control on/off switch

The cruise control release switch, the clutch TOT switch, and the stop lamp switch are used to disengage the Cruise Control System. The cruise control release switch and the stop lamp switch are mounted on the brake pedal bracket. When the brake pedal is applied, the normally closed cruise control release switch opens and the normally open stop lamp switch closes. The ECM/PCM detects a low signal voltage on the cruise control release switch signal circuit and a high signal voltage on the stop lamp switch signal circuit. When the clutch pedal is applied, the normally closed clutch TOT switch opens and the ECM/PCM detects a low signal voltage on the clutch TOT switch signal circuit. The vehicle speed stored in the memory of the ECM/PCM will be erased when the cruise control On/Off button is pressed, or the ignition switch is turned OFF.

The Cruise Control System will disengage when either the cruise control on/off switch is switched OFF, or the ECM/PCM detects that a driver override function has been active for approximately 60 seconds.

When the Cruise Control System is disengaged, the ECM/PCM sends a GMLAN serial data message via the BCM to the driver information center (DIC) in order to turn off the CRUISE ENGAGED message.