My 90 K5 has a 2 piece front drive shaft. I'm assuming that this is normal, but what the heack do I know? When changing the oil i was noticing that I could move the assembly up and down where they meet. It looks like the same principal for the tailshaft/rear axle opperation. My questions are, Should there be play in the front drive shaft at all? and Would this caude a vibration in 2WD? In 4WD? Does the front driveshaft always spinn regardless of 2WD or $WD opperation?