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  1. 9

    Engine dies at 50%+ throttle

    Vehicle still at the dealership. Looks like they will be buying it back. The trouble now is nobody from that department is getting in touch with us. We are in a rental that they way they will pay for but it has been 2 months now. GMC is really dropping the ball on this one. No car and no buyback...
  2. 9

    Engine dies at 50%+ throttle

    Hi @StephenPT I only buy brand name Peak Blue DEF. I heard of others buying cheap WalMart stuff and having issues so I spend the extra $$ to avoid any quality problems. The cam shaft sensor did not sound like something easily replaced. The more they wrench on and take apart the NEW vehicle, the...
  3. 9

    Engine dies at 50%+ throttle

    Update to this post. Still no diagnosis from the dealership, they nor GMC TAC can figure out the issue. GMC keeps saying they will not do a buyback without a diagnosis. Catch 22.
  4. 9

    Engine dies at 50%+ throttle

    Thanks @DuraYuk I think it is something to do with emissions too. Just to be clear, it does not reduce power. The engine completly dies. It turns off. We have to pull over and restart the engine when it happens.
  5. 9

    Engine dies at 50%+ throttle

    Jinxed @OR VietVet ? This is my wife's car so ultimately the color combo is her choice and I am interested to hear your thoughts on that combo we have now.
  6. 9

    Engine dies at 50%+ throttle

    Hi @OR VietVet .The rebuy would require a like new vehicle being available. My concern is that the strike will limit the new vehicle availability therefore making a rebuy more challenging. I already do not see my build really anywhere nationwide. Black exterior, tan interior, second row bucket...
  7. 9

    Engine dies at 50%+ throttle

    My thoughts too @B-train I have asked if they have looked at the DEF tank and sensor. Of course they have not and are for some reason fixed on the cam shaft. I wish we could temporarily disable the emissions limp systems to see if that fixes the problem. My only complaint about diesel is all the...
  8. 9

    Engine dies at 50%+ throttle

    Thanks @BrokerThis . I was basing the DEF consumption as compared to what my 2011 F350 consumed. Good to know that the consumption is not out of line for the GMC. I did not try the ol' disconnect the battery trick. The dealership has had it for over a month now. Maybe the battery will die in...
  9. 9

    Engine dies at 50%+ throttle

    Brand new to the forum here. 2023 Yukon Denali with 3.0 Diesel. Engine completely dies when giving it more than half throttle and throws "Service Emision System See Owners Manual" and "175 mi Until 65 MPH Max Speed". Can reproduce it every single time we try. Started with power cutting in and...

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