What sifting problems that can be fixed without replacing transmission? on 2003 Chevrolet Impala

Sifting problems, when accelerating will jerk. Seems worse on inclines, on straight stretch will shift if I let off gas pedal, seems to be stuck in 3rd gear now. Also ABS & traction off lights are on & when starting the service traction system warning comes on. Changed transmission fluid & filter a week ago.

by in Staunton, VA on May 17, 2014
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1 answer
ANSWER by , May 17, 2014
Scan test of ALL modules needed! ......To be done by a mechanic....parts store cant do this....