* Faulty Traction Control System: The most likely culprit is a malfunction within the traction control system itself. This could be a sensor issue (wheel speed sensor, yaw sensor), a problem with the control module, or a wiring fault.
* Software Glitch: Less common, but possible, is a software bug in the car's computer that's causing the traction control to deactivate incorrectly.
* Other Electrical Issues: A broader electrical problem in the car could be interfering with the traction control system's operation. This might involve a failing battery, alternator, or other electrical component.
* Stuck Switch/Button: While unlikely, there might be a button or switch related to traction control that is malfunctioning and inadvertently turning it off when shifted to drive. Inspect the traction control button (often indicated by an icon of a car with skid marks) to ensure it isn't stuck.
What to do:
If your Cavalier's traction control is unexpectedly turning off, you should have it checked by a mechanic. They'll be able to diagnose the problem using diagnostic tools and determine the cause of the malfunction. Driving with a faulty traction control system can be dangerous, especially in slippery conditions.