PASSLock ignition locks vary by the version (PASSLock I or II), the type of connector, and if wired, the length of the wire. When purchasing a replacement ignition lock, make sure the part number is correct for the year, make, and model. There are three basic styles of PassLock ignition locks: Modular, Modular in-dash, and CSS. PASSLock was developed for the General Motors 10-cut lock mechanism. However, before a tamper mode engages, the car may run for a few seconds. Note: The theft deterrent function of the PASSLock System locks out the fuel injectors after the engine is started.
According to General Motors, should the ignition lock be force rotated, the lock must be replaced in order to operate the vehicle. The PASSLock system is designed such that forced rotation normally damages the electronics, immobilizing the vehicle.
After three consecutive failed attempts, PASSLock will enter Long Tamper Mode, disabling the engine for 10 minutes while the Theft System indicator on the instrument panel flashes. If the values do not match, the fuel supply is shut off.
#Encrypted passlocker code
The sensor electronically signals the vehicle’s on-board computer, and the fuel supply remains on if the electronic value matches the code stored in the computer. When the correctly cut key is inserted into the lock cylinder and rotated, the magnet registers on the sensor’s three switch points.
Any key blank with the proper profile cut to the correct depths can be used to operate the ignition lock.įor the 1995-1/2 model year, General Motors introduced PASSLock, the first ignition lock equipped with a magnet mounted into the ignition lock cylinder and a corresponding Hall-effect sensor mounted into the housing assembly. No programming is required for the PASSLock-equipped vehicle to accept additional keys. NOTE: For the purpose of this article, the terms PassLock, Magnetic Resonance Device (MRD) and Vehicle Theft Deterrent (VTD) are interchangeable. Unlike the General Motors PASSKey I/II, VATS, PASSKey III, or keyless, the security of the PassLock system is built into the lock and is not dependent on a specialized key or separate device. PASSLock increased the level of security while retaining the ease of service and costs offered by standard ignition lock systems. The PassLock system was designed to prevent vehicle theft by disabling fuel to the engine if attempts are made to start the vehicle without the correct bitted key.
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