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GMC C/K 2500 Superchips Performance Chips & Programmers

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Latest Customer Reviews

Superchips Cortex Programmer Reviews

Great buy

Reviewed By Johnny C (HEPHZIBAH, GA) Reviewed for a 1999 GMC C/K 2500 —5/15/2013 4:26 PM

This product do what they claim it does. I just had a little issue first when trying to install it but after contacting Superchips directly they had an update that fix the issue. Truck is now running a lot better.

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Superchips Flashpaq Tuner Reviews

Superchips review

Reviewed By Charles S (Greenfield, WI) Reviewed for a 2004 GMC C/K 2500 —8/4/2012 2:30 PM

I bought this so that I could hopefully improve fuel mileage while towing my 14,000 lb trailer. After 800 towing miles I have not seen any change from stock. I do see less downshift on grades which means more HP.

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