High idle24v
From Diesel Truck Resource - Wiki
Enabling High Idle On Your 2004+ 24V Engine
First, read this thread.
The thread will give you much of the proper information needed to have this done. You can also print out this TSB to take to the dealer in case they're not aware of this TSB for your truck.
- Remember, this is for automatics only!
http://wiki.dieseltruckresource.com/images/f/f1/18-004-04-1B.jpg
