brannnor

I am interested in what speed are you running at 1500RPM 20 going 60 the best MPG I got was 20 so far hope I get results like you Norm

I couldn't see tell if the speedo gauge was reading 60 mph at 1500 rpm's is all. I thought maybe my transmission wasn't shifting to 6th gear is all. plus the best I have gotten is 20 miles to the gallon. Norm

I have a 5.3 with 3.42 and 20" tires im only doing 60 a 1500 Norm

What did they tell you to one of mine fell out too Norm

I still not getting the gas mileage I see on here but it is better then my other truck when I check mine the actual is .5-.7 miles to gallon off from the screen Norm

I have the same problem too I think it is the switch too when I take mine in for servicing I will get the dealer to repair it Norm

I want one that gets 22 mpg I havnt got close yet 19.1 is best so far 2014 GMC 1500 4dr 5.3

I have a 2014 GMC 4 door I live in the county . I get about 18.5 driving to town and around town. I took my first road trip my screen said 18.9 at 77 . on my trip I filled up 4 times and I 17.3 ,18.6,18.7 and 21 on the last leg home 2 lane roads at 60 I check my mileage using a calculator and my indicator on the truck is .4-.7 tenths more then actual My lifetime on the remote link says 17 mpg I would suspect it to be off by .4-.7 mpg as I get by manual calculations Norm