RPM moves speed goes till 80km. on 2005 Chevrolet Trailblazer

My car RPM moves but car can't pick up some time goes till 60 what is the problem

by in Leona, TX on July 14, 2012
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2 answers 1 comment
ANSWER by , July 14, 2012
have some one scan trans sensors and sloenoids like aamco with there free diag
COMMENT by , July 14, 2012
today I will go for scan let see! The mechanic replace Gear Oil and GearOil Filter
ANSWER by , July 14, 2012
Sounds like trans.trouble.