: 2007 Escalade - replace VCIM backup battery and antennae

10-12-12, 05:52 PM
Does anyone know if the backup battery for onstar is inside vcim or elsewhere, ie if backup battery is exhausted, does it require a new VCIM or just battery.

Do the new shark-fin antennae carry both GPS and cellular signals... my old VCIM has two cables (cell and GPS) where new VCIM only has one plug...

10-17-12, 08:39 PM
The battery is under the driver seat. Must be replaced if used. Let me know if you find the part number. I killed mine calling OnStar when my starting battery was dead.