Reviewed By marr s (Hurlock, MD) Reviewed for a 2004 Chevy Avalanche —2/2/2016 1:18 PM
the horsepower out put was substandard. and I actually got better fuel mileage in the extreme mode then I did in the eco mode.
Reviewed By Steve R (Tucson, AZ) Reviewed for a 2007 Chevy Avalanche —1/19/2016 7:34 PM
I bought this to bypass the G.M. Active fuel management system. Instead of going to the stealership I purchased this programer to set the computer to the v-8 only setting. This repaired the 4 engine codes I had set on my computer. The Avalanche kept turning off the fuel to four cylinders and setting the check engine light . The engine runs great now and this is a bargain 20 minute repair to program the computer. Ten days now the 5.3 runs like a top and no codes . Thanks Again!
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