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How can i fix the pump or the torque converter inside a automatic transmission with out removing it?

2004 GMC Envoy XLT four wheel drive 4.2L no drive in any gear i can put the shift lever in drive and reverse or any gear the vehicle want move i check for pressure at the transmission line by disconnecting one of the line from the radiator and start the engine i didn't see no fluid coming from the line or radiator why? could the pump or the torque converter be the cause?

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Is there any oil in the transmission
unless you have a dipstick ( GMC products are normally sealed ) it is very possible that there is no oil in the transmission
the transmission oil pump is part of the transmission around an input shaft and requires the transmission removal for repair / replacement
take it to an accredited transmission service center and have it tested and properly diagnosed

Posted on May 14, 2017

  • 2 more comments 
  • Joe Russell May 15, 2017

    yes there is oil in the transmission what do you think cause the vehicle stop pulling? is there something like and liquid I can put in the transmission to help the problem?

  • Bill Boyd May 15, 2017

    it indicates that the torque converter clutch servo /solenoid is not operational and that is an electronic problem not a mechanical problem
    you will have to talk with an accredited transmission shop because if that unit is not working then there may be a problem in the pressure control for the system and that may account for the lack of oil when you removed the oil line
    again I would consider it an electronic rather than a mechanical fault

  • Joe Russell May 15, 2017

    how can i check for a electronic problem?

  • Bill Boyd May 15, 2017

    take it to an accredited transmission professional and have the fault codes read



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