DiggityDave

iTrader: (1)

So I have searched all my eyes will allow me to do for a possible cause for the problem I am experiencing. I have 2001 Chevrolet 2500 HD 4X4 6.0 4L80E.
The problem I am experiencing is that when I come to a complete stop and take off again the truck seems to lunge or jerk almost feels like the transmission is slipping. It has happened a few times before but has been really intermittent and now is at the point of doing it everytime I stop and take off. I did figure out in all the diagnostics that I have performed that when the truck is in tow/haul mode it doesn't do it. I'm thinking maybe the pump or a solenoid is going out. Any help would be greatly appreciated.

Atomic

iTrader: (42)

Pull the pan and change the filter. If there is excessive material in the pan then the trans is likely going out...does the pump whine loudly?

DiggityDave

iTrader: (1)

I'm going to try and pull the pan this week and see if I can figure something out. The fluid isn't burnt from what I can tell on the dipstick it still has a nice red tint to it and doesn't smell burnt.

Vince B

iTrader: (1)

These units have issues with bushing wearing. I have seen it many times while building them. The issue in some cases is where the turbine shaft will eat into the forward drum sealing area for the rings. I think this might be your issue. The reason why it seems better in T&H is because you have slightly higher pressures. HTH Vince

DiggityDave

iTrader: (1)

Ok so my next question is do you think hard parts are good still? As in can I just buy a rebuild kit and fix the issue or do you think any of the hard parts are hurt? Another diagnoses today is that when it's under a lot of load it slips shifting into gears.