Passkey 3 bypass. This system prevents your car from being stolen by recognizing the key code and signal from the body control unit. This video shows you how to bypass the passkey feature on most gm vehicles ranging from 1999-2005. Mar 21, 2025 · If you’re having issues with your car’s anti-theft system and theft deterrent modules, here’s how to bypass and permanently disable the GM PassLock 3 system. You can crank it but it won't start. Learn the steps, tools and factors to bypass the passkey III theft deterrent module in GM vehicles. Please like and subscribe for more content! PASSKEY 3/SECURITY SYSTEM BYPASS! No start Learn how to bypass Passkey 3 system with the help of a bypass diagram. . Reassemble the unit with the key inside. Installation instructions may vary depending on the brand of the bypass module so it's highly recommended to follow the directions included with the bypass module. Jul 22, 2013 · With the key in the acc position, the voltages to the ignition, injectors, etc is off.