General Information

IMPORTANT:
^ If replacing the Passlock module with a GM Service Parts Operations (SPO) replacement part, the module will learn Passlock(TM) sensor data code immediately. The existing PCM however, must learn the new fuel continue password when the Passlock module is replaced.
^ If replacing a PCM with a GM Service Parts Operations (SPO) replacement part, after programming, these modules will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. A PCM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password and will require a learn procedure after programming to learn the current vehicle's password.

Conditions
Use this procedure after replacing:
^ The Passlock(TM) Sensor
^ The Passlock(TM) Module
^ The PCM

Learn Procedures
There are 2 available methods to perform the programming procedure:
^ A 10 minutes procedure which requires a Tech 2 and a techline terminal
^ A 30 minutes procedure which does not require the use of any tools