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JJesse729 replied to the thread 2022 Yukon OnStar and Check Engine Light.After seeing this post I did confirm I had low voltage on the battery after the car sat for 8 hours (11.9 volts). I am going on...
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JAs many others have posted, my OnStar seems to have died a slow death. We were slowly losing functions (Compass, GPS, Hotspot, buttons...
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