New Yukon Denali

[2021DenaliDR]

So just got a new Yukon Denali and have 2 issues/questions.

1. On a full tank its showing only a 195 mile range and an average MPG on the trucks computer of like 6-8mpg. Only has 40 miles on it and have already reset it to start fresh after delivery from dealer @ 15 miles on odometer. Anyone else getting very low MPG readings? Not driving hard at all.

2. Third row headrest on drivers side won't stay up after first time lowering seat. I have seen its a common issue but haven't seen anyone knowing of the fix

 

[OR VietVet]

Welcome to the forum from Oregon. The fix for both of these is a trip to the dealer. That MPG problems sounds like a reset situation and the seat headrest is gonna likely need a part replaced. There is likely a TSB about the headrest problem since, as you say, it is a common issue. May even be a TSB for the MPG problem too.

 

[wjburken]

Welcome to the forum from Iowa.

The MPG may need a tank to get calibrated.

As @PNW VietVet said, this new, take it to the dealer.