2014 3500HD button on dash. What does it do?

   / 2014 3500HD button on dash. What does it do? #1  

Hay Dude

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Joined
Aug 28, 2012
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3 miles from where the gun was discarded
Tractor
Challenger MT655E, Massey Ferguson 7495, Challenger MT535B, Krone 4x4 XC baler, (2) Kubota ZD331’s, 2020 Ram 5500 Cummins 4x4, IH 7500 4x4 dump truck, Kaufman 35’ tandem 19 ton trailer, Deere CX-15, Pottinger Hay mowers
Still truck shopping for an HD.
Have seen a few with this button/knob. What is it for?
Some 2500/3500 HDs don’t have it.

1707005518468.jpeg
 
   / 2014 3500HD button on dash. What does it do? #3  
Looks like it is probably an optional pto control.
 
Last edited:
   / 2014 3500HD button on dash. What does it do? #4  
Exahust brake?
 
   / 2014 3500HD button on dash. What does it do? #5  
Whatever it is , it's in an awkward place for the driver to access.
 
   / 2014 3500HD button on dash. What does it do? #7  
Looks like that is what it is, mystery solved.
 
   / 2014 3500HD button on dash. What does it do?
  • Thread Starter
#8  
Thanks, I looked for about 10 minutes and couldn’t find what it was.
Makes sense as it was on a 3500 cab/chassis with a dumping flatbed.
Pickups mostly have a cubby hole.
 
   / 2014 3500HD button on dash. What does it do? #9  
I know what a PTO is but since I didn't know what it imply exactly here it is...

How It Works​

2020 GM HD trucks will utilize a PTO that’s drive gear operated via a chain to direct engine power. Since PTO on the trucks is engine-driven rather than turbine-driven, owners can use the PTO while the vehicle is idling. A button inside the cab enables the PTO, and a mode selector allows adjustment of load and torque output.

The General says that the 2020 GM HD trucks will be the first in the HD truck segment to feature a fully integrated PTO system.
 
   / 2014 3500HD button on dash. What does it do?
  • Thread Starter
#10  
Most are on the side of the Allison transmission.
 

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