Hey y'all. I got a 2002 gmc 3500 4x4 with a 6spd and everyrwhere I've looked for chips/programmers says for tranny option all they have is allison as the option can I even put a chip/programmer in my pickup . Looking for fuel mileage more then I am power but lil more power would great. Also other ways to get more mpg other chip/programmer would great. Thanks for reading Allen

 

EFI live. Got a buddy with an 05 that's tuned, he's making 468 on the ground and claims he's getting 20+ on the highway. There's lots of different options as far as efi goes but that's what gets my vote.

 

 

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