EVA Software Cartridge
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
The J 38792-A uses a software cartridge, the J 38792-60, which provides various information to the J 38792-A with an additional feature which can be selected and utilized to assist in diagnosing vibration concerns.