Cruise Control Disengaged

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The cruise control module disengages the cruise control operation based on the signals from the following switches:

The On/Off switch
The CCP switch
The stop lamp switch
The TCC brake switch

The stop lamp switch, the TCC brake switch, and the CPP switch are used to disengage the cruise control system. The stop lamp and the TCC brake switch are incorporated into an assembly and are mounted to the brake pedal bracket. When the brake pedal is depressed, the normally open stop lamp switch closes and the normally closed TCC brake switch opens. The cruise control module detects a high signal voltage on the stop lamp switch signal circuit and a low signal voltage on the TCC brake switch/cruise control release signal circuit. Depressing the clutch pedal while the cruise control is engaged will disengaged the cruise control system. When the clutch pedal is depressed, the normally closed CPP switch opens and the cruise control module detects a low signal voltage on the CCP switch signal circuit. The vehicle speed stored in the memory of the cruise control module will be erased when the cruise control On/Off switch is turned Off, or the ignition switch is turned off.

When the cruise control system is disengaged, the PCM sends a class 2 message to the IPC in order to deactivate the cruise control indicator.