I'm considering installing an aftermarket tuner, a
cold air intake, and an exhaust system in order to
improve my gas mileage. Will these upgrades
really improve my gas mileage? Could these
upgrades cause damage to the engine?
Been there and tried that, several times. The only thing those upgrades will do is make a very few extra horse power and fuel mileage will be the same, slightly less if you utilize the horse power. Save your money.
It's a brand new truck? and you think you can improve on the efforts of a team of GM engineers? Be careful- messing with the truck may void your warranty-
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