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No cruise no high idle for pto

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    Gmc
    C5500
    2005
    250k
    6.6
    My fast idle stopped working for so long i forget what the switch looks like. But i need it for my pto. I also need to find my cruise control fuse/breaker/relay. Not sure which it is but most things in fuse boxes inside truck are metalic. They look like fuses. There are some fuses under hood along with relays, but none labeled cruise or fast idle...in all fuse boxes
     
  2. pto?? Power Take Off??
     
  3. Yes PTO power take off He needs higher RPM to operate whatever the PTO is operating
     
  4. Yes, its a tow truck. It is slow