New fluid change. Pan dump. New filter and fluid. Now it slips at takeoff periodicly. Fluid and filter change? Pretty basic I thought. Ive serviced and rebuilt most of my trucks and cars for over 30 years. 137000 miles on car 2nd change.Is it time for tra on 2004 Chevrolet Monte Carlo

Is it time for trans replace or ?

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1 answer
Possible poor sealing at filter connection to valve body? IF the problem wasn't present prior to service , I'd think either internal leak or wrong type/lower grade fluid? Just random thoughts.......