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1999 GMC Sonoma Performance Chips & Programmers

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Latest Customer Reviews

Jet Performance Programmer Reviews


Amazing Product!!

Reviewed By Judy W (Hurst, TX) Reviewed for a 1998 GMC Sonoma —4/1/2010 9:19 PM

i have a 98 GMC Sonoma with a 4.6 (V6)and you can hear it grab second gear! but if you dont like the way it set up itself you can go back and customize each and every set up (tire size, gear ratio, rev, speedo, shift fermness and alot more!!) if i was a Kindergarden teacher i would give it a GOLD star!!!

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Jet Performance Module Reviews


Suprising Electronic

Reviewed By Justin W (Livonia, MI) Reviewed for a 2001 GMC Sonoma —12/16/2009 2:44 AM

I was very scared at first, the module is made of plastic and trying to secure it into the ECM was nerve crunching at the thought of snapping the plastic. After a hard start, the module adjusted the factory settings and damn, I was off. At an average I dropped off a second and a half on my 0-60, haven't tried the 1/4 Mile yet. I'm interested to see. Any Fuel Injected vehicles NEED this chip!

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Hypertech Max Energy Programmer Reviews


2004 gmc yukon xl denali 2500

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.

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