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Gear selecting when driving

cmysstailights

By cmysstailights
in Troubleshooting & Recalls

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cmysstailights Enthusiast

cmysstailights

Posted
Posted

Was going upstate to get travel trailer. Tried tongoninto manual mode and select gears. Truck would do it on its own. Would not into the gear i wanted or stay in the gear i wanted. All temps were good. Any one else run into this?

 

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newdude Senior Enthusiast

newdude

Posted
Posted (edited)

What did the PRNDL display?  Did it show "M or L" and then a gear # when you went to manual mode?  Also, 1500 or HD?  Says you drive a 2014 high country.  

Edited by newdude
Donstar Senior Enthusiast

Donstar

Posted
Posted

FWIW. -   In manual mode the truck will not go into a higher gear than the one you've selected but will continue to automatically shift between the lower gears.  I think the term "manual" is misleading.

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flyingfool Senior Enthusiast

flyingfool

Posted
Posted

he wants manual shifting not manual gear select. your just selecting the final gear it can go into.

 

you have to  start in 1st gear manual mode, then you bump the shift button to the next gear.

cmysstailights Enthusiast

cmysstailights

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  • Author
Posted
What did the PRNDL display?  Did it show "M or L" and then a gear # when you went to manual mode?  Also, 1500 or HD?  Says you drive a 2014 high country.  
Changed trucks its a 15 6.0 hd. Put it in manual. 1 click down from drive

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JimCost2014 Senior Enthusiast

JimCost2014

Posted
Posted
30 minutes ago, cmysstailights said:

Ill try starting in manual. I was driving on the highway and switched to manual while in motion.

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That should work the same as if you started off in the M1 mode from a stop.

newdude Senior Enthusiast

newdude

Posted
Posted (edited)
1 hour ago, cmysstailights said:

Changed trucks its a 15 6.0 hd. Put it in manual. 1 click down from drive

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1 hour ago, cmysstailights said:

Ill try starting in manual. I was driving on the highway and switched to manual while in motion.

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Yea try that.  Manual mode in the trucks pretty much just acts as a gear limiter.  Even with the 8 and 10 speed trucks.  You have control over the downshifts (unless it won't let it do one) but upshifts you don't have much control.  

 

So for example, if the shift indicator is reading M5, the truck will shift itself 1 through 5 and not go past 5.  In M3, it will shift normal 1 through to 3rd but not go past 3rd until you hit the + on the shifter.  By starting in M1 and then increasing the gear numbers, you can then dial in the appropriate lock point for pulling your trailer up a hill, etc.  If however, you are hitting the +- button, and the gear # doesn't change, then you might have a bad wire in the shift lever.  

 

The sports cars (Camaro, Corvette, etc.) give you 95% direct control of up and downshifts, just about any % of throttle input, unless the computers say no.  

Edited by newdude
Donstar Senior Enthusiast

Donstar

Posted
Posted
8 hours ago, cmysstailights said:

 

Was going upstate to get travel trailer. Tried tongoninto manual mode and select gears. 

Your truck will do a fine job in "D" when pulling a trailer.  If you have tow/haul mode it will reduce the amount of gear hunting.  I like to play with the "M" mode but I know the truck will do fine without my help!  I would be out of character if I didn't take this opportunity to whine about the loss of manual transmissions in pickups!  

cmysstailights Enthusiast

cmysstailights

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I like holding a gear a little longer, never worry about letting her scream. But on flat ground no trailer couldnt tell if she was in 6th. Tach was around 2300 rpms

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