Question about 2008 Saturn VUE
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.
Posted on Sep 17, 2010
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Posted on Jan 02, 2017
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