GM Pass Key Systems Quick Tests

Since the 1986 model year, GM has used the Pass Key system as an anti-theft device. It started using this system on the 1986 Corvette, and in 1988 added this system to the Camaro and Firebird models. Since that time, GM has added this system to many of its models. This system has two functions: first, it has a starter interrupt feature; second, it can disable the fuel injectors electronically if the ECM does not receive the correct signal from the Pass Key system.The Pass