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5R55W Transmission Showing P0775, P0732, P0735

Discussion in 'Transmissions & Transfer Cases' started by lmarkie74, October 29, 2017.

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    1. lmarkie74

      lmarkie74 New Member

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      I rebuilt this transmission 10,000 miles ago and am now getting the P0755, P0732, P0735 codes. When I rebuilt the transmission, I took it to a locale transmission shop and he added the servo sleeves to the servo bores. What would you all suggest starting with?
       
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    3. Rick

      Rick Pumpkin Pilot Staff Member Admin Elite Explorer

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      I moved your thread to our transmission subforum.
       
    4. lmarkie74

      lmarkie74 New Member

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      If replaced the valve body with a upgraded re-manufactured valve body. Didn't work. Still getting P0775. Getting a 1-2 shift flare, 2-3 shift is fine, 3-4 shift is fine, 4-5 shift is fine. Torque Converter Clutch does not engage. My understanding is that with a P0775, the code doesn't let the TCC engage. Everything is pointing to the O/D Servo. When I rebuilt the transmission, the O/D Servo was bad. I bought a used O/D Servo from a Transmission shop that looked good and he replace the servo bores with brass sleeves for me. I readjusted the band before replacing the valve body. Any transmission guys seen the brass sleeve in the OD Servo bore go bad or possibly the servo cup leaking or cracked? All I can think of I've haven't changed

      This is killing me!
       
    5. lmarkie74

      lmarkie74 New Member

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      What would be a good diagnostic procedure to follow and what equipment would I need?
       
    6. JK080

      JK080 Transmission Moderator Staff Member Moderator Elite Explorer

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      If you have adjusted the band that would indicate the band is not broken, there is a good chance the servo piston itself has failed. I would remove the servo to inspect it, the brass sleeves shouldn't be the issue here.
       

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