2004 yukon xl tranny slipping

[clinebarger]

Originally Posted by neo297

In my research I saw where some companies add extra clutch plates to the 3-4 pack is this needed for a stock motor that does moderate towing occaisionaly?

Every 700R4/4L60/4L60E I build gets 9 3-4 clutches VS 6 the factory uses, I consider it mandatory, Even the V6 transmissions that have 5 from the factory.

If it happened all the sudden its probably a apply curcuit problem(cracked servo piston, busted separator plate, bad lip seals on the apply piston, ETC...)
So i whould get it rebuilt because just putting clutches in it will not solve the apply curcuit problems.

[lyrikz]

Originally Posted by clinebarger

Every 700R4/4L60/4L60E I build gets 9 3-4 clutches VS 6 the factory uses, I consider it mandatory, Even the V6 transmissions that have 5 from the factory.

If it happened all the sudden its probably a apply curcuit problem(cracked servo piston, busted separator plate, bad lip seals on the apply piston, ETC...)
So i whould get it rebuilt because just putting clutches in it will not solve the apply curcuit problems.

I knew they had some goodies when rebuilding. Absolutely you would want to have it gone over completely.

Hey cline, do you guys have a tranny dyno there??? Whats your average rebuild cost on his transmission??

[clinebarger]

Originally Posted by lyrikz

I knew they had some goodies when rebuilding. Absolutely you would want to have it gone over completely.

Hey cline, do you guys have a tranny dyno there??? Whats your average rebuild cost on his transmission??

I have worked in some transmission shops that do have dynos, but a 4L60E is hard to dyno without a stand alone controller that shop owners dont want to buy.

$1200 to $1500 with R&R. $800 to $1000 bench job.

[neo297]

Thanks guys you have confirmed what I was thinking, there is just no sense in not putting a rebuilt in as long as the old one has to come out. I am going to make sure I have an up graded 3-4 pack do i need to ask for a 4l65e
to get the upgrade or are the rebuilt "4l60E's" already there. I know the 65's did not have 8 or 9 plates in 3-4 but had more than the 60's. I also thought the 65 had different planetery set. I am going to present these questions to my mechanic so I can ensure I get the best tranny to put in. I do appreciate the input and will post back when the repairs are done.
Paul

[clinebarger]

Originally Posted by neo297

Thanks guys you have confirmed what I was thinking, there is just no sense in not putting a rebuilt in as long as the old one has to come out. I am going to make sure I have an up graded 3-4 pack do i need to ask for a 4l65e
to get the upgrade or are the rebuilt "4l60E's" already there. I know the 65's did not have 8 or 9 plates in 3-4 but had more than the 60's. I also thought the 65 had different planetery set. I am going to present these questions to my mechanic so I can ensure I get the best tranny to put in. I do appreciate the input and will post back when the repairs are done.
Paul

4L65Es have 7 clutches, and have a 5 pinion planetary gear set VS 4 on 4L60Es. A quality rebuild on your 4L60E will be good.

[neo297]

Thank you I had takren it in yesterday at lunch and there were no dtc codes it showed it to be shifting into third and then it just slips bad he told me it would nee dto be pulled so I told him to get me prices on a gm rebuild that has 100,000 mile /3yr warranty v. his supplier of rebuilts with a 90 day warranty and based on cost we will proceed accordingly. Thanks to all who responded.
paul