why does 1007 Grand Prix shift hard?
just replaced air mass sensor and throttle positioning sensor, now the vehicle will not shift out of 1st untill approx. 30 mph and rpms at around3500, second shift comes at aproximately 55 mph.
just replaced air mass sensor and throttle positioning sensor, now the vehicle will not shift out of 1st untill approx. 30 mph and rpms at around3500, second shift comes at aproximately 55 mph.
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