Chevrolet Cavalier VATS Disable / Delete Service

If your Chevrolet Cavalier will not start due to a failed VATS key or ignition problem, the Vehicle Anti-Theft System (VATS) is often the cause. Our VATS disable and delete service permanently removes the immobilizer requirement from your ECM/PCM, allowing your Cavalier to start and run without needing a resistor key or functioning VATS system.

What MoPower Can Offer

Permanently remove VATS security from your Chevrolet Cavalier ECM/PCM
VIN rewritten back into the ECM/PCM for a seamless factory match
Fixes no-start conditions caused by failed keys, ignition, or swapped computers
Plug-and-play PCM install – no dealer key programming required

How VATS Works

Chevrolet equipped many models, including the Cavalier, with the Vehicle Anti-Theft System to reduce theft. The system requires a resistor pellet inside the ignition key. If the correct resistance is not read, the ECM/PCM disables fuel and spark, preventing the engine from starting. Our VATS delete service removes this lock, restoring normal plug-and-play operation.

Failed or missing VATS keys cause no-start issues
Bypassing or removing the system allows normal key or switch use
Applies to 1996–2005 Chevrolet Cavalier models with VATS

Security Light Woes

After VATS delete, the security light may remain illuminated on some Cavalier instrument clusters. If this happens, the only solution is to remove the bulb or LED from the dash.

Plug-and-Play Installation

Most customers can install a VATS-deleted ECM/PCM with no additional programming. In rare cases, a global DTC clear may be required before the vehicle will start.