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tranny question

Discussion in 'Chevy Trucks' started by 78K20, Sep 19, 2005.

  1. 78K20

    78K20 Member
    from WV
    Messages: 49

    I installed a rebuilt th400 from advance auto parts into my truck about a year ago. Its been good for about a month but now its starting to act up . It only does it when it gets hot enough like driving down the interstate or around town for a little while. When it go to take off it jerks and shakes the truck for about 10 yards or so. I also noticed that when i leave from work it hesitates when i first start out like its slipping then when it warms up its fine until it starts that jerking crap. I changed the fluid and filter but it didnt help. One guy said the gasket between the valve body which the valve body seemed a little loose when i changed the fluid. Another guy said it was the torque converter. The tranny has a two year warranty. what should i do? :help: Thanks for the help
     
  2. hickslawns

    hickslawns Senior Member
    Messages: 619

    Did you put in a new torque converter with the rebuilt tranny? It does sound like torque conv. I wouldn't swap a tranny without a new convertor. Just my opinion. I don't know about the gasket deal. When cold, does it take forever before it wants to take off?
    What year is the truck? I had a 93 that acted similar to this. It acted like an engine problem, as if it had a serious miss on the bottom. Mine ended up being a $25 electrical solenoid (probably made in China) which cost me a new tranny. The solenoid was affecting the lockup in the torque converter. Wasn't actually the torque converter, but a solenoid acting up and confusing the converter. That is why i like the older trucks! No elec parts in the tranny! Good luck.
    Best thing I can tell you is take a look at your warranty. See if they will have a mechanic hook it up, read the codes, and see if one of those solenoids is causing the torque converter to act up. It really sounds just like the problem I had. Not a mechanic, but I did go thru it just like your description.