I put 2000km in 5 days on a 2015 5.3 double cab. (GM rental)
The solution to the frequent shifting under moderate load?
Put it in tow mode on hills or place it in "M" and down shift it yourself.
The 3.42 gear is a must with these trucks, a 3.76 or 4.10 would be fine with me.
But so would the 6.2 and the 22" tires.
I averaged 10.2L/100km loaded one way and higher speed the other in mountainous terrain.
I can smell a 2015 3500 167.7 CC SLT DuraMax in the next few weeks.
The solution to the frequent shifting under moderate load?
Put it in tow mode on hills or place it in "M" and down shift it yourself.
The 3.42 gear is a must with these trucks, a 3.76 or 4.10 would be fine with me.
But so would the 6.2 and the 22" tires.
I averaged 10.2L/100km loaded one way and higher speed the other in mountainous terrain.
I can smell a 2015 3500 167.7 CC SLT DuraMax in the next few weeks.