That's exactly what happens. Say I'm in 2nd gear with the pedal all the way to the floor. The truck doesn't shift, RPMs go to 6,500 (perhaps higher - it's hard to tell) and after several seconds the computer or something else takes over and just cuts the power off. RPMs drop fast even thought my foot hasn't moved. I go from being pushed back in my seat to being flung toward the windshield. I assume it's the rev limiter or some other safety device taking over.
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