2017 GMC 6.0 Vortec - Manual Shifting?
I notice when I am towing my RV, my truck seems to try and down shift sometimes when climbing a hill before it should. Do any of you guys manually shift to get more power or save gas in these situalt...
Forum Discussion
Whats really nice also about using the M feature is that you can lock out gears. So if u toggle up to 5 then the computer locks out 6th gear. I really use this feature when towing. I love to have more control when running the hills either up or going down. Also if I'm going through heavy or slow city traffic while pulling the camper then I can leave it in 4th gear and lock out 5 and 6th. I got back from Trip to Georgia last month, I took hwy 19 on the way up while following my parents. We kept the speed at 65mph this time and I even locked out 5th and 6th when I got to some of the hilly areas. Kept my speed with out any issues. BTW I pull around 10k and have no issues.
