Bought an 2014 Silverado LTZ 2 wheel drive. Thru 3 tanks I'm getting anywhere from 10.8 thru 13 mpg. Mainly city driving yes, but a couple 75 mile city/highway combinded trips thrown in there. Got the highest MPG during the 1st tank., Then had the recall throttle body flash done along with 2 other recalls. Since then the truck does seem to drive smoother with maybe a little transmission gear seeking now and again. But the MPG has gone down. And I've been babying the throttle trying to keep it in V-4 as much as possble.
Took it back to the serivce shop that did the recalls. The service guy just said it's due to bad gas. Well 2 tanks later and no better. He needs the truck for an entore day to go thru it but won't give a loaner. I feel I should be averaging at least 16.. But closer to 18 at lowest. I have an 01 jeep with dana 44's and 35 in tires that gets almost this good of MPG.
Anyone else having this issue?
