Is a 3406c mechanical?
Is a 3406c mechanical? Some 3406c were PEEC and some remained true mechanical units and lacked electronic cruise control and throttle wires. What is a 3406c cat? A 3406c is basically the same as a B model except it has electronic accelerator and fuel measuring. How do I turn my 3406C? Facing in from the back stick your pinky in the slotted hole and push in on that thing. Just face the front of the truck, turn palm up and stick it in. Again, and just to clarify, this is all idiot proof and you can't mess anything up on...