need some advice .......only 39000 miles after change transmission fluid the when the car stop and accelerating ....the 1ST to 2ND gear I feel the car slips and fall back(hesitates) and clunk sound .I goto five auto shop they said need the transmission rebuild and one of the shop AAMCO need get the transmission out (cost $600) then depend the fix cost of the transmission(can credit back if fix the transmission). AAMCO said my transmission fluid has burn or the CLUTCH need to fix....another one need $2100 don't said any thing (only need rebuild the transmission)....I need some advice before goto the the auto shop (just change the transmission fluid 3 days ago and the fluid level ok ...don't have any engine light ,oil light or any light on etc....