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Dalaigh · 12-30-2012, 07:52 PM

11.5mpg? I'm getting 16mpg in my '12 with a 4.8 and 4spd. I thought the 5.3/6spd was supposed to be better.

12-30-2012, 07:52 PM	#14
Dalaigh Canadian Trucker Join Date: Nov 2010 Location: Sarnia, ont canada Posts: 648	Re: My 2012 GMC Sierra 11.5mpg? I'm getting 16mpg in my '12 with a 4.8 and 4spd. I thought the 5.3/6spd was supposed to be better. __________________ 2020 Silverado Trail Boss - 6.2/10spd