Pass-Key(R) II Ignition Key: Notes

WARNING: This page is about a different car, the 2001 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

If replacing Instrument Panel Cluster (IPC) with a GM Service Parts Operations (SPO) replacement part, IPC will learn passkey data code immediately. An existing PCM must learn new fuel continue password when IPC is replaced. If replacing a PCM with a GM Service Parts Operations (SPO) replacement part, after programming, these modules will learn 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 other vehicle's fuel continue password and will require a learn procedure after programming to learn current vehicle's password.