The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Anyone use a tuner, and get good results?

95 S_Trucker · 06-01-2019, 02:04 PM

My 2011, with the same L96 and 6L90E that your 15 has, gets 10-12 mixed, 14.5 on the highway, and 6 when towing 8,000 pounds.

Want good fuel mileage? Then don’t buy a 3/4 ton truck.

06-01-2019, 02:04 PM	#5
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,178	Re: Anyone use a tuner, and get good results? My 2011, with the same L96 and 6L90E that your 15 has, gets 10-12 mixed, 14.5 on the highway, and 6 when towing 8,000 pounds. Want good fuel mileage? Then don’t buy a 3/4 ton truck.