i was told this was the dark side. but i am glad to be joining. dont have a truck yet been doing some research on what years to stay away from. the issues each year has. i dont know which to buy. getting a little impatient. havent gone this long with out a diesel.
Heres a quick rundown of most common probs:
LB7 (01-04.5) -
Cons: Prone to injector problems
Pros: Most dont have emissions crap, good power builders, plentiful
LLY (04.5-05) -
Cons: Can have overheating issues if pulling heavy on grades (seems to be hit and miss problem though...wouldnt be a deciding factor for me), Injector wiring harness problem (easy fix and no money involved)
Pros: Great all around truck, VVT turbo
LBZ and LLY (05-07.5) -
Cons: Can blow holes in pistons with power adders
Pros: Very powerful motor, last year before EPA killed mpg
LMM (07.5-10) -
Cons: DPF kills mpg, computer in truck can tell if you have ever input a power adder and warranty is automatically void from there on out
Pros: Powerful and NNBS
Allison 1000 (01-05) -
Cons: NSBU switch could go bad in earlier years (easy fix), 5 speed, must take out trans for a transgo kit if done all the way
Pros: Great trans
(06+) -
Cons: Nothing
Pros: 6 speed, little stronger built than previous model, transgo jr installs without taking out trans
Thats just a little rundown. All years are great really. Hey afterall its a Duramax either way right? Personally I would get an LLY or better just because those injectors scare me but thats ONLY my opinion. Im sure someone can add to that also. Hope it helps bud :thumb: