Disappointing results GMC 2500 HD SLT
I purchased the chip for my 2017 GMC 3/4 ton pickup 6L engine (19K miles on the odometer) There has been no gain in gas mileage. I believed there was a gain in horsepower but that was the optimist in me. Last week I drove from NY to CO and averaged 14.4 miles traveling more than 1800 miles on interstates. I am going back to NY at the end of the month and will remove the chip to compare the mileage. While I’m in CO I’m going to keep the chip installed (not sure why). When you spend nearly $300 for something it’s normal to expect something in return. Chip your car should be very interest to know the results I achieve driving the same 1800 miles back to NY without their chip installed. If you are too, stay “tuned” as I will write an updated review in early October. I’m back in NYS. While in CO I talked to a Chip Your Car rep who was very willing to help. After determining the chip may be the issue I received another one and installed per new instructions he gave me. I drove back to NYS with no increase in mpg.