'08 Tahoe NAV, Time & features keep resetting

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RottsRoc

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Anyone else have this issue and find an answer?? My NAV keeps changing my Region from the SW (Az.) to DC area. When this happens the clock advances 2 hours, the "Limit Features While Driving" changes from "Off" to "On", and the Caution splash screen comes up on power up??? Once I reset everything back to the way I need it it may stay for a couple to several engine starts. Dealer says it needs "recalibrated" then says it only works half the time then they replace the whole system/unit!! This issue has been going on for about 2 months best I can tell. Coincidentally I had the battery replaced 2 months ago......dealer says that's what caused it but couldn't tell me why it didn't happen with the first 3 battery changes..........Anyone have any ideas???
Thanks
 

GreaseMonkeyLSX

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i had an issue with my 09 tahoe no nav but i noticed it would reset all presets on the radio and clock once in a while it wouldnt even crank it ended up being the ground cable assembly. put a new one in never had that issue again
 

RottsRoc

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Thanks Guys for both the suggestions, I appreciate it as "nothing" has worked so far. I did notice that if i disconnected the negative battery cable, let it sit for a few minutes then reconnected it the problem went away for a few days......but eventually came back....:sad72:
 
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