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Either you have a vacuum leak on your transmission or the bands on second and third gear are burnt off. Try pulling off the transmission oil pan.(if you do this make sure you have enough Auto Transmission Fluid to put back in unless you find a bunch of sludge in the pan. If this is found then the bands are burnt off and the transmission should be replaced.) For a vacuum leak start up the vehicle and open the hood. If you hear a hissing sound then there is a vacuum leak and it usually is down on the transmission itself or right at the carburator. you can check the vacum at the modulator with a vacum gauge. if you pull the hose off the modulator & trans fluid comes out them the modulator is bad answer if you are saying that the trans does not even try to shift out of first then you have trash in the valve body or broken parts. if the vehicles pulls from first then the engine revs up and does not pull then the clutch packs have failed. a vacuum modulator causes hard/slow shifting but does not stop the trans from shifting
What else can I help you with?
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does anyone have a f@#$%^& clue i would apreciate it thank you.............
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