Knoxy: is most of your driving on the highway?
because with my mods listed below, im only seeing 13.5-14.5 mostly 80-85% city driving.
ive been really thinking about getting rid of my Z71 but i had alwasy wanted one. hell with this mileage i should have just looked for a Vortec Max.

anyway JC whitney is slow as dirt but im getting free shipping so i cant complain. My Torque curve will be here sometime next week.

CVTAX: is your throttle cable adjusted correctly? i dont know but that might cause some problems. thank god for fly-by-wire.
Good luck.

 

The first thing I did was reset the computer....How do I check/adjust the throttle cable? That might be the reason.