OrlandoFL4.8

iTrader: (1)

I have the FLT level 5 with a Yank TT3000 TC and I have noticed that my TC has trouble locking up when I put it in drive from a dead stop, doesnt matter if its hot or cold and seems to be getting progressively worse. When I put it in drive the rpms will just go up and I go no where as I give it some gas, than it will jerk into gear all of a sudden. I also notice that while cruising when I let out of the gas and let it coast the rpms will drop all the way down to idle as im cruising about 50mph, than when I give it gas again slowly the rpms will go back up to around 3000 before I feel it grab. Today when pulling out from a stop just after I put it in drive it was slowly moving as the rpms were getting up into the 4000 + range. I had to stop, put it back in park, put it back in drive, than it grabbed and was fine. I got a the following codes a few weeks ago, but they have not came back since...
p0740 - TC clutch malfunction
p0785 - shift timing solenoid malfuntion
p1860 - TCC PWM solenoid circuit

Does any one have any ideas or ways of trouble shooting if its a solenoid, or TC or both.

OrlandoFL4.8

iTrader: (1)

Any one experienced this before? I dont believe that this is tuning related because it ran fine on the tune for the past 2 months. There are no noises or shuttering, or vibrations assoiciated with the aforementioned. I have had this setup for almost 6 months.

Yank

iTrader: (181)

Sounds like a weak or worn transmission pump, plugged filter or even a cracked and leaking filter housing can do this, as can a torn or missplaced transmission gasket.
make shure you check the fluid level

LS1TRUCKGUY

iTrader: (7)

sounds like a trans problem as stated above. not a tc problem. im leaning toward the pump. good luck to ya.

OrlandoFL4.8

iTrader: (1)

thanks, Ill take it in and haveem change out the fluid and filter. How hard is the pump to replace, does the tranny gotta be dropped? Is there a way they should know it is the pump like hooking it up to something and checking the line pressure?