A General Motors passlock bypass module disables and removes engine security features installed in GM vehicles. NEWROCKIES' Pro Module is designed to bypass all GM engine immobilizer systems.
The GM passlock system comprises a key and lock cylinder that is wired to the theft deterrent module, or TDM. The key and lock mechanism supplies a specific input signal to the TDM, which in turn generates an output signal that fires up the engine. Failure in any of these components results in engine immobility.
NEWROCKIES' Pro Passlock Bypass works by replicating the output signal produced by the TDM. This enables the vehicle's fuel injectors to function and start the engine. This product is designed for long term use and cuts back on repair costs.