Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
This is a common problem among these vehicles. Leaving the ignition switch on for the 10 minutes, lets the anti-theft system relearn...commonly you will have a failed Passlock Sensor which needs to be repalced and than relearned. But in a small amount of cases the anti-theft module itself is the problem. You can attempt to repalce the sensor yourself in the steering column, but to correctly diagnose this concern you would need the dealer to scan the anti-theft system, to be sure this is the fault. But, before anything try the 30 minute relearn procedure below and see if the symptoms subside.
need help on a 1999 Chevy K3500 pickup with a 7.4 L