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can this be done? 2004 trailblazer 4.2 vortec

any help on this?

hello! i've bought the mpvi pro a few months ago.
gave it a go on a friends car.
now moving to the wife's truck.

i've been told hptuners will help on fuel economy for this truck!
any guides or...

hello! ive got a cobalt and hp tuners, i would like to know what do i need on my channels list for this specific car since i havent been able to get a good answer searching.