got a 06 C5500 at work hear LLY Allison bone stock with 82k
last fiew days driver saying it will randomly at highway speeds cruzing 65-70 will downshift all the way to 1st and remain locked there and wont shift out he says he can shut the truck off for 20min and re start and some time will go back to normal and some times wont git out of first starting out says it has done this sever times during the week. cralled under there pulld the main conector off has a little bit of oil in it , gona blast it with contact cleener and drive it my self.
the trans service light is not on but the CE light is ill see if i can connect up and pull a code later
any one have a idea what could be up other than the main wiring conector
last fiew days driver saying it will randomly at highway speeds cruzing 65-70 will downshift all the way to 1st and remain locked there and wont shift out he says he can shut the truck off for 20min and re start and some time will go back to normal and some times wont git out of first starting out says it has done this sever times during the week. cralled under there pulld the main conector off has a little bit of oil in it , gona blast it with contact cleener and drive it my self.
the trans service light is not on but the CE light is ill see if i can connect up and pull a code later
any one have a idea what could be up other than the main wiring conector
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