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2003 GMC Envoy Performance Chips & Programmers

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Latest Customer Reviews

Jet Performance Module Reviews

seems to do the job

Reviewed By jeff l (POTTSTOWN, PA) Reviewed for a 2003 GMC Envoy —8/22/2013 10:56 AM

I purchased this for my 2003 Envoy XL 4.2L V6 for towing mostly. I also have a K+N cold air intake. My wife and I have noticed a difference in shifting gears, lower RPM's in regular driving and towing, more power where it needs to be, but have not seen a drastic change in fuel economy. Have only had it installed now for 3 weeks. I would certainly recommend this to anyone.

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TruXP Xtune Performance Tuner Reviews

Tuner works fine

Reviewed By Keith B (New Berlin, WI) Reviewed for a 2008 GMC Yukon —9/4/2015 5:07 PM

The tuner works fine on my 5.3L GMC, but I was unable to get the Software to work, even after contacting Edge the maker of this product. I really only wanted to be able to disable the Active Fuel Management, but this unit does so much more.

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Edge Evolution CTS2 Programmer Reviews

Great Product

Reviewed By Eric S (Fair Oaks, CA) Reviewed for a 2013 Ford F-150 —10/1/2015 2:24 PM

Best investment sofar on my truck. I am now getting 14-15 mpg city, and 19-20 mpg highway on the economy tune. I have tried out the race tune for a day, and it increases horsepower significantly. Also adjusting my truck for my bigger tires is a night and day difference in my shifting points and it is not as luggy. I also purchased the Dash pod mount and it is worth the 50$.

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Year Range For GMC Envoy Performance Chips & Programmers