What is the PASSKey System on a GM car?
What is the PASSKey System on a GM car? Some GM vehicles come with a factory-installed anti-theft system commonly referred to as the passlock or passkey. Due to glitches with these built-in security systems, GM owners may experience problems trying to start their vehicles. How can I bypass the PassLock system on my GMC Suburban? Ive recently become victim of the passlock system on my 99 gmc suburban 1500 4x4. I want to bypass this security system all together. After some research and studying the wiring diagrams it seems plausible that you could cut the fuel pump relay wire and...