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the car must have one first to find it. go one? IDK
read your RPO code sheet on this car, (means as built in english)
UE1 is the code for ONSTAR , on board this car, got that>?
it is not just one thing, but the VCIM is model name , that?
the service manual covers al this, lost that or read it here. https://eautorepair.net/Marketing/Default.asp
i will now read to you./
it tells us
or Vehicles equipped with OnStar® (UE1) with Back Up Battery: The Back Up Battery is a redundant power supply to allow limited OnStar® functionality in the event of a main vehicle battery power disruption to the VCIM (OnStar®module).
the GM web site shows not one VCIM listed at all or for sale
so is a stealth trick to keep thieves form attacking, it
and wise choice IMO
no reason told for the easter egg hunts.
no DTC errors told .
not told if wanting to add it, (you can;t DIY) gm told you that.
or why? to get best help tell reason or what is end goal.
nobody can guess gee, what's up doc.
munch munch munch carrot.
end hunt and me failing. (my guess is by design)
UO 100-109 typically loss (or near loss) of communications with Onstar. Problem may be loose harness connection or defective onstar backup battery. I'm working on this issue with my 2008 Vue as we speak. I had a very similar code before, last year, and the dealer replaced the battery and the issue was resolved. There does exsist a service dept advisory informing dealers of this Onstar battery issue. Good luck.
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