Circuit Description
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2000 GMC Yukon, 2000 GMC Savana Special, 2000 GMC Savana Camper Special, 2000 GMC Savana, and 2000 GMC Pickup. However, it is still accessible from the selected car via links, so may be relevant.
This DTC sets when ignition is active, Passlock™ signal is not open or grounded, correct key was used, but code does not equal learned key code during engine start or for one second at any time during ignition cycle. System enters tamper mode. If ignition was off, vehicle will not start. If vehicle was running, vehicle will restart, but SECURITY indicator light will remain illuminated. This DTC may be set if Passlock™ sensor was replaced and reprogramming procedure was not performed.