4L80E No Reverse!

[Kros383SS]

On the valve body side my book is calling that passage orificed exhaust oil. On the case side the circuit is 3rd gear feed. So with that being said if you do not have the gaskets cut out as you were told then circuit can not be completed. I think if your clutches in the direct are ok, with doing this it should work. Hope this helps. Vince

thanks Vince....after spending a couple hrs looking at this I came up with the same results as you.
Im crossing my fingers that installing the gaskets with these holes punched out I will regain 3rd and also my reverse seeing reverse cannot happen unless the direct clutches are applies.

I figured it was an old kit caused the instructions say 1995

Thanks once again...I will post results when I reinstall VB

[06whiteChevy]

your still gonna get beat!!!!!!

[Vince_B]

your still gonna get beat!!!!!!

With that statement I can feel the love! Kros383SS your welcome and looking forward to seeing your results. Vince

[06whiteChevy]

With that statement I can feel the love! Kros383SS your welcome and looking forward to seeing your results. Vince

were good friends always given each other hell about our trucks!!!!

[WARLOCK]

your still gonna get beat!!!!!!

I thing he will win.....He does after all have a NELSON Tune.....FTW

[Kros383SS]

I thing he will win.....He does after all have a NELSON Tune.....FTW

Coundnt have said it better myself!

Vince, I have Reverse and third now. I punched the holes out and what do you know It works.

Only thing is when I shift to 3rd, its in 3rd but takes maybe 2-3 seconds before it shifts. Not slipping pretty much a delay going into 3rd but its still anice and firm shift.

[builtyota]

Hey guys, I've been searching and searching, I've seen the end of the web and went back to the beginning again. When I google "4l80e no reverse slipping" every link is purple for the first 20 pages because I clicked it and read it.

I know this thread is about a year old but it's the only one with the answer to my problem...I hope, so I'm resurrecting it.

I have the same problem as described here, I installed a full manual kit from Transgo into a transmission that sat for a bit but was working fine when parked. Now I can only back up on level ground, not on any sort of incline, it just slips.


I bought my kit on Ebay, I may have got an older one that was metioned here. The pics are gone from this thread. They would probably help me figure out what my problem is. Can they be reposted? I don't recall having to punch/cut any holes in any of the gaskets/plate when I did the install.

Which holes need to be cut? I called Transgo today but got no answer, (it just rang). Any help would be very appreciated, I currently have the truck sitting in the driveway with the reverse servo assembly out (its fine, no cracks). I followed all of the instructions very carefully, took my time. I'm sure I have everything installed properly. Another thing, I tore the house apart looking for the instruction I had, can't find them.

Kinda ticked at Transgo right now!

Thanks!
Jeff

[Kros383SS]

I dont get much time on the comp. lately so I'll give you my cell 832-361-9395.
I know the answer and have a PDF copy of the instructions.

Richard

[Ray@NP]

check the rear band apply pin might be too short or may be binding in case.

[builtyota]

Great! Thanks Richard, I'll give you a call today when I have some time , hope you do too. My email is jeffsemale@hotmail.com if ya could send that PDF to me, I would be indebted to you.

I re-read the thread and realize you were using a rebuild gasket, didn't catch that the first time, does the T-go gasket have the holes already or do you have to cut them too? I guess I'll just give you a call.


And regarding the pin, why would putting the kit into th VB cause the pin to be short now? I know some guys add 1/4" to it. Does the servo not apply as much/not travel as high in the bore now, you would think it would be the opposite! Like I said, it worked fine just before the kit, the transmission was rebuilt a few years ago by a trans. shop, (they had added the SK bypass valve kit too). I'll get my hands on a caliper and check it, maybe they already put a longer pin in during the rebuild.

I appreciate the help guys!

Jeff