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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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Edge Insight CS/CTS Monitors Reviews


Great Gauge Package

Reviewed By Stephen S (Dalton, PA) Reviewed for a 2014 GMC Sierra —2/25/2015 3:23 AM

This all-in-one unit is great. Was able to read and clear a DTC that cost me $80 to have done at a garage. Grate selection of gauges. Would cost hundreds of dollars more to install each gauge separately. Very easy and simple set-up and navigation thru all its features. Very simple installation and could be removed quickly if needed. Wish there were more options for mounting but very worth the money.

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Superchips Flashpaq Tuner Reviews


fuel economy and horse power

Reviewed By michael c (KALAMAZOO, MI) Reviewed for a 2009 Jeep Wrangler —2/26/2015 8:48 PM

Love the flashpaq. Tire size changer helped with fuel economy and the power is there when needed. Awesome great price.

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Year Range For GMC Envoy Performance Chips & Programmers