2012 GM 3500HD question

   / 2012 GM 3500HD question #1  

Hay Dude

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3 miles from where the gun was discarded
Tractor
Challenger MT655E, Massey Ferguson 7495, Challenger MT535B, Krone 4x4 XC baler, Kubota F3680 & ZD331 Ram 5500 Cummins 4x4, IH 7500 4x4 dump truck, Kaufman 35’ tandem 19 ton trailer, John Deere CX-15
What is this knob/switch for?
Its not the 4WD Selector, the 4wd selector shifter is on the floor.
 

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   / 2012 GM 3500HD question #2  
Maybe pto switch....:2cents:
 
   / 2012 GM 3500HD question #4  
PTO rpm lock set.
 
   / 2012 GM 3500HD question
  • Thread Starter
#5  
Thanks!
 
   / 2012 GM 3500HD question
  • Thread Starter
#7  
 
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