Most Popular Superchips for 2018 GMC Sierra 2500

The Superchips Flashpaq F5 did exactly what it said it would, Better fuel mileage more power at gas pedal i think its great for the 2500 Gmc 6.0

I love this product. I can change my truck to have to pull the house down or set it up to Canon Ball Run lol

So far I have only used it on the 87 octane tune setting. Definitely an overall mild improvement in performance. Does not kick out of overdrive while in cruise control mode nearly as often. Picked up at least one possibly two miles per gallon.

Bought this for my Silverado 2500HD. After I purchased the tuner add on, it significantly increased my horsepower. Its a difference of night and day. I initially had a problem with configuration of the tuner. A couple phone calls to SuperChips tech support and it was fixed with 3 updates. Etrailer and SuperChips customer service is second to none. I will pay more for my purchases just for the peace of mind knowing a company always stands for their customers

Exactly what I ordered, for to me fast an I love everything about it

Simple to use with easy menus and update process via your computer. Don't expect a dramatic power boost with gas engine. I have noticed much improved mid range throttle response, especially at higher elevations. My 2500 HD no longer has to downshift 2 gears to maintain or increase speed on 5 to 6% grades in winding turns in the 45 to 55 mph speed range. Wide open throttle passes at higher speeds seem to be a bit quicker. To soon to form any opinion on fuel mileage.

Thank you etrailer for your awesome customer service. etrailer will be my go to site for all my automobile needs.

Great Parts, Good Price, but pretty slow on delivery.

Product performs as expected. What's important to me is the company I purchase from.. The follow up from the etrailer team is excellent!!!

I had to update the tuner two times in order to get the tunes for my truck once I got the tune installed it don’t change my shift points in the transmission my first chip I got back in 2000 changed my shift points as well up the horse power .you would think we’d have better technology in 2021. I had called the tech line about four times and all the techs I talked to were nice and helpful.