Conditions For Setting DTC

WARNING: This page is about a different car, the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

A new Passlock(tm) module has been installed and ignition is turned to RUN position but not rotated to CRANK position. Once ignition switch has been rotated to CRANK position, Passlock(tm) module will learn Passlock(tm) code. Theft relearn procedure will need to be run in order to make Powertrain/Vehicle Control Module (PCM/VCM) receive the correct fuel enable password.
Passlock(tm) module is in learn mode but does not see a valid Passlock(tm) sensor code because of a sensor or a wiring problem.