03 Commonrail auto trans.
 

how should i go about my transmission before i chip my truck and so forth.

At the very least I would upgrade your Valve Body and Torque Converter.


Luke

cool thanks what are good brands to choose for the auto transmission?and you know of the commonrail's fuse box convenience problem?it supposed to be their #1 problem and of course mines got it, it's causing my fog lights not to ground and turn on and wanted to know if there's any way of repairing it because if not i get to drop $200 to replace it :td:
thanks again for the advice,
tony

My Great Depression Revisited Budget Transmission Build Up - Dodge Diesel - Diesel Truck Resource Forums

id do what this guy did, the best bang for your buck and you'll have a great trans.

think any of that would differ for an auto?

that is an auto rebuild.