I had an 05 LLY too, it was a great truck. Probably least expensive truck I've owned. I did the math and it was $160 month after all the mods. Only work I did to it other than routine maintenance was a water pump at 100k. Still had the original brake pads at 150k miles and it looked pads weren't worn much.100% Agree, rhe “golden era” of the duramax. Bought my daughter an ‘06 “cat eye” Chevy with the LBZ for her first rig…solid truck and I can still reasonably do maintenance work. I love my LLY but their Achilles heel is a head gasket job (which mine required but overall it’s been a damn good truck, just gotta know that going in).