I have an '07 Dually 4x4 5.9. Pretty much stock. Whenever I coast down an incline I feel a jerking in the driveline. The heavier the load the worse it gets. There are times when I'm pulling my loaded 5th wheel camper that it is very severe. This only happens when coasting or deceleration. I have had the U-Joints checked out and they say they are fine. I haul and tow heavy loads and this is becoming a real pain. Truck has 31K on it. Bought it new. It can be hard to notice if you are driving empty or not pulling a load but I can tell its still there.. Ideas???

 

Mine does it with the cruise (2007 5.9L 2500) on and it scares the hell out of people in the truck. It will do it towing or just driving with no load on.

 

Mine does on cruise when going down hill i think its the computer trying to keep the truck set at mph you selected, but this is very subtle not bad.

 

Yea mine does the same thing...

 

Mine does it too but when I have the Exhaust brake on it is much cooler!

 

I can imagine!

 

Mine does it but its not that bad on my truck.

 

I've never felt comfortable using the cruise control going downhill. Same for in traffic on the freeway.

 

Mine only does it with the cruise on coasting downhill.