GMT K2xx Trucks General Discussion 2014+ Trucks | General Discussion

Gas mileage

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Old Sep 17, 2016 | 03:44 PM
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Default Gas mileage

What is everyone getting for real world gas mileage on 14+ half ton crew cab 4wd's.
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Old Sep 17, 2016 | 04:27 PM
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Highway, city, or combined average?
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Old Sep 17, 2016 | 05:00 PM
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Combined
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Old Sep 17, 2016 | 08:50 PM
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I only average 13 on 93 with the Whip. RCSB weighs 6k as loaded daily. I don't drive aggressively either unless I need to embarrass some jackass. Mostly city but some highway. Should do better after I get a custom tune.
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Old Sep 17, 2016 | 10:28 PM
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Double cab 4x4 with a 6.2 and it's a pig...... like 15 combined and I do mostly highway. Unless I want to do 50 mph I may as well drive the old 05 1500HD 6 liter truck.....
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Old Sep 19, 2016 | 10:38 AM
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I average about 15mpg... that's light traffic in the morning and heavy traffic in the afternoon.
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Old Sep 20, 2016 | 08:08 AM
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Oh about, 18 combined, 23 highway!
But, RCSB 6 speed... 2WD with 22"s.
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Old Sep 21, 2016 | 01:10 AM
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on 2wd 1500 5.3l i get 15mpg city and 22 hwy, i have a best of 27 mpg on a 40 mile road locked up tc in od and in v4 mode.

i use mobile 91 octane, and have locked opened the exhaust valve in the muffler
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Old Sep 21, 2016 | 04:58 PM
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RCSB 5.3 average 12 combined. i work in my truck and idle allot.....

lucky to get 300 miles a tank
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Old Sep 21, 2016 | 05:43 PM
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6.2/A8 CC on 22s, getting about 13.5 city. Best has been 14.3 mixed city and some hwy miles.
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