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.

Service Details

• You must ship your ECM/PCM to MoPower Calibrations
• We only charge return shipping — customer covers shipping to us
• Turnaround time: 2–3 business days after receiving your ECM
• Please include your Full Name, Return Address, and VIN number with your ECM