buc1980 wrote:
First you don't suppose to set the cruse control going downhill with the trailer behind.You suppose to use the tow mode and watch the speed and the RPM gauge and pressing on the brake to slow the truck down.Diesel engine don't like high RPM.I think that the computer throw a code because of the high RPM.
False.....
Absolutely nothing wrong with using cruise while towing on decents with the newer diesels that have exhaust brakes. This is where they absolutely shine and are designed to hold set speed.
Also, nothing wrong with a diesel turning high RPM when not being fueled.
