Allison profomance rebuild

Cbucci

New member
Dec 20, 2015
7
0
0
Hi everyone, i have an 03 duramax that i just rebuild my 03 Allison tranmission with the transgo and suncoast rebuild kit. I put the Trans back in the truck and it won't shift. When you shift into gears you can hear the motor, ever so slightly idle down and I can barley feel the gear catching but nothing happens. I never done this before but Imy sure everything was correct.

Last night I took the Trans back put assuming it was a bell housing gasket in wrong, they were both in correctly. So I took the pump apart again and re read the instruction again. I used a ligher spring in one of the valve and realized I didnt put in a shim in.

Was not having that "bronze" shim and having a heavier spring enough to prevent the truck from moving?
 

Bonestock

Active member
Aug 9, 2010
1,358
1
38
Worland Wy
Hopefully you didnt put your gaskets for pump to stator stator to case on 180. This will block off pump flow. You will have to pull trans and put new gaskets in the right respective location if this happened. Dont ask me how I know lol!