Body Control Module
WARNING: This page is about a different car, the 2002 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
Using a DRBIII(R) scan tool, retrieve the current settings for the BCM programmable features and the axle ratio/tire size (electronic pinion factor). These settings should be duplicated in the replacement BCM using the DRBIII(R) scan tool before returning the vehicle to service. See BODY CONTROL MODULE in REMOVAL & INSTALLATION.