GMC Repair: RE: 08 GMC Acadia, gmc acadia, loop mode


Question
I'm curious if you can give me any reason why my battery on my almost new car keeps losing it's charge.  It was dead about a week ago and now it is dead again.

Answer
there have been issues with the onstar or XM radio system getting stuck in updating loop mode which will drain the battery, best bet is to let the dealer update the software and check the battery to make sure it did not kill a cell when it was stuck in update mode