Trans fluid fanishing

mnjohnson · #1 01-01-2009, 07:41 PM

I have a 02 Screw 5.4, 3.55 LS diff, 4x4, not sure if the trans is a 4R100 or the 4R70W. Two weeks ago when I had the local speedy lube place change the oil they added 5 pints of trans fluid, they also said there were no noticeable leaks anywhere. I checked the fluid again today and it is not touching the dipstick. Any ideas where the fluid is going?

Register today or sign-in to remove these ads!

thePUNISHER · #2 01-01-2009, 07:58 PM

if theres no leaks its going into the transfer case.........pull the fill plug on the case and see if fluid comes out heavily......

mnjohnson · #3 01-03-2009, 01:57 PM

That seems to be the problem. Im not very mechanical but I am assuming there is a some sort of seal between the transmission and the transfer case for the fluid to escape the transmission. Is this a costly repair? Is this an easy enough repair that any shop can do or should I go to a transmission shop or maybe the dealer?

Thanks for your help.

thePUNISHER · #4 01-03-2009, 02:01 PM

the xfer case has to come out. then the input seal replaced. i work at the dealer...i prefer the dealer. i have seen too much shotty work come out of the small shops that i dont recommend them anymore. yes there are good ones too....just not in my area. if you have a good technichan/shop you trust bring it to him.