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GMC Sierra Performance Chips & Programmers

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Latest Customer Reviews

Range Active Fuel Management Disable Device Reviews


range fuel management

Reviewed By Adam H (BRYAN, OH) Reviewed for a 2009 GMC Sierra —7/4/2015 8:54 PM

Does what it is supposed to do.. A little better highway mileage with unit plugged in on 09 sierra 5.3. Only bad thing is if key is left in accessory and not started right away truck will not always start. U have to remove module start it then plu g back in.

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Hypertech Max Energy Programmer Reviews


Tuner for speedo correction

Reviewed By Roger G (SAINT SIMONS ISLAND, GA) Reviewed for a 2004 GMC Sierra —7/2/2015 4:55 AM

I was very pleased with the ease of use of this tuner. I bought for my speedo correction after a rear end gear change and a tire change. When I programmed everything the speedo was dead nuts on to my GPS. 5 miles later my ABS and brake warning lights come on. Called hypertech... said it was a known fault of the abs gm computer and I would have to continue to input tire size until I got within 10% of the front to rear wheel speed. I dropped it 1/2" and speedo is off by 1.5 mph @60mph. Recommend

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DiabloSport inTune I-1000 Tuner Reviews


It does what I expect and more

Reviewed By Erik R (Anza, CA) Reviewed for a 2009 GMC Sierra —5/16/2015 1:43 PM

Dang. I didn't realize there was a 500 character limit. So I will keep this short and sweet. Power 5 Ease of use 5 Tuneability 4 Instructions on what does what 3 If you don't care about your 0-60 times and yada yada buy this tuner. Oh! Do NOT adjust your tune if you have smog/state inspection coming up. They don't tell you that if you adjust parameters you will fail. It took about a week for my truck to go through the "GM cycle". Great buy, autoanything rocks

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