2012 GM 3500HD question

/ 2012 GM 3500HD question #1  

Hay Dude

Epic Contributor
Joined
Aug 28, 2012
Messages
26,027
Location
A Hay Field along the PA/DE border
Tractor
Challenger MT655E, Massey Ferguson 7495, Challenger MT555D, Challenger MT535B Krone 4x4 XC baler, 2-Kubota ZD1211’s, 2020 Ram 5500 Cummins 4x4, IH 7500 4x4 dump truck, Kaufman 35’ tandem 19 ton trailer, Deere CX-15, Pottinger Hay mower, NH wheel rak
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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