Medium and Heavy Trucks
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the most common failure for both together is a bad clutch switch. it will not allow either to operate. I would have this checked first
did you check both positions??? high and low?? it will still start ok but can still block the cruise and jakes
are there any stored or active codes in sam cab or sam chassis??
ok were there any codes or do you mean there are none??? please clarify
does the cruise light come on the cluster when you turn the truck on??? can you raise the idle with the switches on the steering wheel??
how are you making out??
at the pedal or the down on the bell housing?? just trying to see the fix for future reference
thats the clutch switch I told you about.
how are you making out?