11.5 mpg average is that normal?

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Oct 1, 2009 | 11:03 PM

#11

dirt track racer 81

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From: Hennessey, Oklahoma

i got 16-18 on the hiway with my old 6.0

Oct 1, 2009 | 11:43 PM

#12

53RUSSELL

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From: AJ, AZ

15 ish mix

Oct 2, 2009 | 12:41 AM

#13

MikeGyver

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From: Suburban Chicago

I'm about 13/15 city/ highway.

Oct 2, 2009 | 01:45 AM

#14

AKlowriderZ71

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From: Wyoming

With your 20's, all short-trip city driving, and a heavy foot, sounds about right.

Oct 2, 2009 | 02:04 AM

#15

stock48

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From: Colorado Springs, Co/ Central, Ca

12~14 city, 16~18 highway been as high as 18.5 highway @75mph.

Oct 2, 2009 | 03:28 PM

#16

terravast4

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From: Austin, TX

I get about 14.5 and I am a pretty agressive driver

Oct 2, 2009 | 04:47 PM

#17

budhayes3

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From: Hackensack, NJ

I got about 14.5 mixed when my truck was on the road...now it gets great mileage while sitting in the garage lol.

Oct 2, 2009 | 04:52 PM

#18

joeyc125

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From: Cedar, MN

Quote:

Originally Posted by GMCtrk

I get around 13.5-14 on average, heavy city, some highway

I'm getting about the same too. I can get 17-18 though on a highway trip at 70 mph.

Oct 2, 2009 | 05:21 PM

#19

Coban

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From: League City, TX

Taking short trips will kill your gas mileage. I think its the after-start enrichment function of the ECM. Might also need a better tune in general.

Oct 2, 2009 | 05:32 PM

#20

007gmc

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From: memphis tn

my afr is right around 14.7 part throttle. i run 24 psi in my rears and 40 psi in my front tires. i do have a heavy foot with it when taking off most of the time.

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