CVO 1/22/2012There are three types of U-joints used in these trucks. The first is held together by wire snaprings in the yokes. The second type is held together with injection molded plastic retainer rings. This type cannot be reassembled with the same parts, once disassembled. However, repair kits are available. The third type (4WD models only) is the large constant velocity joint which looks like a double U-joint, located at the transfer case end of the front driveshaft on V-Series trucks.
For the drive-shaft, see this
RealMenWearBowties 1/26/2012it would also help to heat up the ends of the drive shaft enough to loosen the u-joints