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  1. 07 STS-V throttle and boost issue

    Cadillac STS-V Series Forum
    My 07 STS-V occasionally at 50 mph, when you stomp on it, the car downshifts like its going to take off, but then no throttle and boost to 0. I have to let off the throttle and then all is OK. This has put me in some dangerous situations so now I don't trust it. No codes and my tuner can't find...