Question about 2001 Dodge Ram 2500 Truck

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Transmission will not shift from 1 to 2 without reving to high rpms. just changed fluid and filter.

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Since the transmissions shifting is controlled by a TCM (transmission control module) the very 1st thing u must do here is have the system tested for codes, u may have a defective shift solenoid, the solenoids that shift the trans open and close different fluid passages in the valve body, this can also be caused by a internal hydraulic fluid passage leak, if u do have a electronically related problem u should have a Check Engine light on, u don't say how many miles on truck but if it is over 100,000 i would suspect the transmission has a internal fluid pressure seal leak that is causing the problem, this would match the symptom u have, as the RPM's go up the pressure increases, this can overcome a leak in the pressure circuit and let the transmission shift, remember a transmission is a hydraulic device, all the computer and the shift solenoids do is control the hydraulic pressure and direct it to the right part of the transmission to shift gears.

Posted on May 30, 2010

  • minniebab May 30, 2010

    after chaning fluid and filter now transmission running hot light is on and so is overdrive light. help please

  • yadayada
    yadayada May 30, 2010

    You have internal damage in the transmission, sorry but it will need to be rebuilt, no is other explanation for these symptoms, if there was i would let you know, sorry to deliver the bad news. My experience? 35 years as a Master a ASE certified mechanic


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