I have 05 LLY. Have had truck for just over 5yrs now. I have put over 158k miles on it. Still runs great.
Have built trans. EFI by Danville Performance. Installed a AFE stage 2 CAI. Had to install PPE race valve. Also did the mouthpiece upgrade. Getting ready to do PVC reroute. EGR delete and down pipe. Stock injector's and turbo. Dyno run truck with max effort tunes installed after tranny rebuild. 544hp 1086tq. Odometer currently reads 230,100mi.