Question about 2002 Pontiac Grand Am
If your unit has a vacuum modulator on it (small can with a vacuum line on radiator side of trans) check that the vacuum hose has vacuum and that there is no trans fluid in it...any fluid that is on the vacuum side of the part indicates that it has failed. That is the usual cause of hard shifting. Another item less serviceable would be an accumulator spring.( You need a manual for those and some are internal.)
Posted on Jul 07, 2009
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Posted on Jan 02, 2017
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