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GMC Yukon XL Superchips Performance Chips & Programmers

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Latest Customer Reviews

Superchips Cortex Programmer Reviews


Great Product

Reviewed By John C (Stamford, CT) Reviewed for a 2004 GMC Yukon XL —6/19/2012 9:49 PM

I own a 2004 Yukon XL Denali and initially it could not communicate with the car; however, after 5 minutes on the phone with a Superchip representative I found out what fuses to pull and easily tuned my truck. It is now running tip-top shape in performance mode and in gas saver mode, responding beautifully with 3mpg increases. Thanks AutoAnything!

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Superchips Flashpaq Tuner Reviews


Fixed all my issues

Reviewed By Allan R (Byron, MN) Reviewed for a 2007 Chevy Silverado —5/27/2015 3:42 PM

truck had problems with rpm fluctuation between 40-50 mph. ran the 87 octane tune and it pretty much took care or it. Didn't see a huge hp gain but the tune for the shift points and pressure was well worth it. Should have bought one years ago. Have a 07 Silverado new body style.

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