ALL possible causes for no forward gear in 4t65e transmission? Added some clips

grcauto

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That has fell apart. The piston is just flopping around. You found your problem.
 

AZilla83

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That has fell apart. The piston is just flopping around. You found your problem.
Awesome! Well that I found the problem. So I'm gonna have to take everything out again? Could you give me a quick rundown on the process & whether it can be done with the tranny case remaining in the car? I don't have the equipment to take it out.
 

AZilla83

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It sounds like you did not disassemble any of the clutches, removing the steel/friction plates entirely. You really need to do that to do meaningful inspection of all those parts. Going that deep into the trans, I would figure on replacing all seals and the friction plates/bands. Inspect the steel plates and replace only as required.
So I found the problem. It's in the 2nd clip. Idk what that parts called & what's all involved in fixing it? Hopefully it can be done without having to remove the tranny from car...
 

AZilla83

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it sounds like a sprag problem or even a stripped spline or a broken shell with out taking it all the way out its hard to tell
Hi, I guess I found the problem. It's in the 2nd clip. Would ya mind taking a look at it & gimme a quick rundown of part(s) name & steps to fix it? Please. I'm hoping it doesn't require the whole tranny to come out bc I don't have a hoist... In the 4th clip it shows how much clearance I have between the firewall if I need to pullout forward servo. I'm trying to head to get the parts but not exactly sure what I need to get? TY!
 

AZilla83

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That has fell apart. The piston is just flopping around. You found your problem.
When ya get a moment, would you gimme a quick rundown of name of part(s) I need to get & steps to fix it please? Trying to head & get parts but not sure of what I need to grab? TY! Greatly appreciated
 

AZilla83

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That has fell apart. The piston is just flopping around. You found your problem.
Can u take look at 5 & 6 clip? It wasn't the piston that was flipping around, it was the forward band. But once I used my finger to push it, it tightened around the drum. But can u tell me if the piston is in bad or good shape pls?
 

bp042665

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the band will move with the piston out but from what i can see in the clips its not piston you nee to take it apart down to the end where you can check that welded gear they break. you can put a new e clip on the servo piston i do on all rebuilds
 

billr

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Don't be so afraid (or lazy) about removing the trans. I have done many such jobs using common jacks, like floor/bottle/scissors, and creative use of blocks. It doesn't really take any "special tools".

That said, I recently needed to do a trans removal at a JY and wanted to minimize my time spent there. So, I bought a $99 trans jack from Harbor Freight. It worked great, and is sturdy and versatile enough that I have found several other (non trans) uses for it. I wish I had bought one years earlier. Same for the HF drywall lift...
 
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