Quote:
Originally Posted by nissanh
If you have the J shifter, NO
Shifter with Lo, N and Hi: YES as it is an all wheel drive (4WD button on the side of the lever). Please correct me if I am wrong.
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I'm pretty sure this isn't correct. I have a 2002 (and the Lo, N, Hi shifter with the 4WD button and center diff lock button) and was under the truck yesterday greasing the driveshaft. With the system in 2WD, trans in P, handbrake on, truck off, the front driveshaft can be spun by hand, meaning the front diff and transfer case are both disconnected, leaving the driveshaft free to "float".
It is my understanding that when the 4WD button is pressed the front diff and transfer case engage the front driveshaft at both ends. Then you also have the center diff lock button which can also lock the front and rear driveshafts to the same speed.