| The early 04's came out with the LB7 motor, same as your 02. The LB7 should get about the same as yours. Later 04's came out with LLY motor that had more smog control stuff on it, and so with more control usually comes less fuel mileage.
__________________ 2002 2500HD Dur/Al CC SB LS 4x4 Sprayed in bedliner, Sun Visor Star Board running boards from previous owner. Edge w/attitude is installed again.
Next Mods when I have the Cash 
4" Stainless Exhaust Single Or Duals?
1967 Camaro RS 327 .30 over Holley 650, Edelbrock hi-rise, Crane Fireball level three cam(torque range 2000 to 8000rpm double bumped heads Hooker Headers 2 inch Duals and thrush turbo muffs,4 Speed Saginaw. |