Why is the transmission shifting more than once in a gear? on 2003 Pontiac Grand Prix

109k mileage. When shifting it feels like a kick almost, from stop to start sometimes not accelerating, when it does accelerate there is a sudden kick. Then between 30-40 mph shifting twice. Is this my transmission, or "normal" for this model?

by in Iowa City, IA on July 17, 2014
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0 answers