I currently have two 6.5's, one on it last leg I think, and am debating on going to either a 6.0 liter gas or getting into a (due to budget) a 01-04 dmax C/C 4x4 with an auto. I've learned here that regardless what year, it will have a LB7 engine. Almost half the people I've talked to with these trucks tell me they are not happy with either fuel mileage, reliability or have had other problems and would consider going back to gas.

Now I realize there are alot of variables such as how the vehicle was looked after, mileage, ect, but that aside, just looking for opinions as to whether its a good motor or not and if there are issues with the allison tranny to, is it expensive to repair if there are? Any comments are greatly appreciated, thanks.