2009 GMC HD3500 newbie

Supermoto68

New member
Jan 17, 2021
21
0
1
Hello All, Thank you for the add. My truck is a 2009 but I have just passed 50k miles. Lifted with 33’s and 100% stock power plant. I am here to learn the right steps in gaining better MPG. Currently only getting 11 mpg
 

2004LB7

Well-known member
Dec 15, 2010
3,954
408
83
Norcal
Highway, city or combined?

Mine with mostly city gets close to the same. If I do mostly highway I can get closer to 18
 

Supermoto68

New member
Jan 17, 2021
21
0
1
I
Highway, city or combined?

Mine with mostly city gets close to the same. If I do mostly highway I can get closer to 18

I drove it to Ohio in July did not really change MPG in that long trip, drove straight through 18 hours