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piecesparts · 08-19-2012, 10:37 PM

I get 19 MPG average with my 2011 2wd SWB, but your 4wd will affect that some. I had the 6 speed shift points modified when I did my computer tune. I did not like the overlap sensation from the downshifts and I wanted it to shift faster than it did from the dealer. I really like the setup, now.

08-19-2012, 10:37 PM	#6
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: My 2012 GMC Sierra I get 19 MPG average with my 2011 2wd SWB, but your 4wd will affect that some. I had the 6 speed shift points modified when I did my computer tune. I did not like the overlap sensation from the downshifts and I wanted it to shift faster than it did from the dealer. I really like the setup, now. __________________ Frank