2018 Yukon Denali got that message and end of vehicle read and setup??. Any help, I?ve submitted a support ticket. Hope I don?t need a laptop to resolve. Using app on iPhone
Tried scanning codes on 14 gmc Sierra and works fine no workie on 18 Yukon ??.
Tried laptop also, same message
No one has any answer or help? HP support says it’s my vehicle.
Fixed, found an obdII extender harness connected for gps tracking. Removed harness and works perfect
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