GMC Yukon XL Hypertech Performance Chips & Programmers

Reviewed By shane f (Altoona, PA) Reviewed for a 2004 GMC Yukon XL —5/30/2015 5:13 AM

This programmer functioned as intended. It boosted horsepower about 10% which raised my average mpg by 21%. Three extra mpg may not seem like much, but when you're averaging 14 it really helps overall.

Reviewed By Lernes H (Woodbridge, VA) Reviewed for a 2002 GMC Yukon XL —7/20/2010 8:18 PM

-idiot proof installation -tremendous flexibility -improved performance -gadget lovers dream

Reviewed By Don C (WEST PALM BEACH, FL) Reviewed for a 2014 Chevy Silverado —1/23/2018 12:01 PM

Great product, wish I got it earlier for my 35's