GM Service Manual Online
For 1990-2009 cars only

When starting the vehicle, Driver 1 or Driver 2 displays on the cluster. If personalization is turned off in feature programming, a message will not appear on the cluster. The number on the back of the transmitter corresponds to driver 1 or driver 2. The navigation system can store memory points for driver 1 and 2 individually. See Personalization for more information.