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...
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Man this post got off track fast. I don't remember a question about transmission slipping.
OP, what do you mean "before it should"? I would think the computer in your truck knows far more about when to shift than you or I do.
Ignore all the posts about lugging; downshifting will in no way cause the engine to lug, quite the opposite.
Modern truck engines like you have are meant to turn a lot more RPMs than older models. I often see 5,000 RPM or more on my 2015 Chevy 6.0. Just today I was towing 14,000 pounds and it was over 5,000 accelerating up a hill. This is normal, expected, and the proper way for the truck to behave. As for saving fuel, I would be far more concerned about having the engine in it's proper power band, the transmission locked in and running cool, and maintaining proper road speed before fuel mileage even crossed my mind.
I find the transmission does a pretty good job of knowing what gear to be in. I will generally use the manual mode only to downshift when descending a grade to keep speed in check.
OP, what do you mean "before it should"? I would think the computer in your truck knows far more about when to shift than you or I do.
Ignore all the posts about lugging; downshifting will in no way cause the engine to lug, quite the opposite.
Modern truck engines like you have are meant to turn a lot more RPMs than older models. I often see 5,000 RPM or more on my 2015 Chevy 6.0. Just today I was towing 14,000 pounds and it was over 5,000 accelerating up a hill. This is normal, expected, and the proper way for the truck to behave. As for saving fuel, I would be far more concerned about having the engine in it's proper power band, the transmission locked in and running cool, and maintaining proper road speed before fuel mileage even crossed my mind.
I find the transmission does a pretty good job of knowing what gear to be in. I will generally use the manual mode only to downshift when descending a grade to keep speed in check.
