Help with M1152. 2006

[Lui1152]

Hello everyone!
I need help
Having issues with power.
When is on H and overdrive and I push on the gas, it has no power and is really slow. It won't move.
When is on P I can rev the engine without any issues.
If I put it on LL and over drive, it drives with so so power but it does not turn off.

It starts fine.

I already checked fuel filter and is fine.

Any ideas?

It was driving fine then after a week and half of standing in the super cold weather..... this issue Started

Thank you

 

[Action]

It does not turn off when in LL? Do you mean the engine wont turn off if the thransfer case is in LL? Say what?

It will probably move in HL too. It sounds like something is broke. Have someone get in and put shifters in H and overdrive or D. Chock tires just in case. You be under it and looks for what is spinning. The power will follow the path of least resistance. So if a halfshaft is broken, that brake rotor will be spinning, but not the outer end of the shaft. If a propshaft joint has failed, one end will be spinning but not the other.
Start at the transfer case and see if one of the outputs is turning. If so, follow that until you find where movement stops. The break should be between the moving and nonmoving.