Reviewed By Steven K (CLEVELAND, OH) Reviewed for a 2008 GMC Sierra —4/27/2020 9:00 AM
easy install,just plug in and the vehicle no longer goes into 4cyl mode.
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Reviewed By Jim T (ROANOKE, IN) Reviewed for a 2011 GMC Sierra —4/30/2019 5:30 AM
Exactly what I was looking for in a programmer. It's simple to use if you download and follow the directions. I used one of the preset programs for regular octane fuel and noticed a huge difference in acceleration and performance.