I drive our suburban for the first time in a while and ave found the
steering to have become very light and it feels somewhat floaty.  It has
covered 100,000 miles and all the suspension components are totally
original.  It seems to have gotten a bit soft recently so I plan to replace
the Shocks with Bilstein Heavy Duty units. (Can anybody confirm that these
units will be OK - I would appreciate a firmer ride with less body roll>0
Can the soft shockers make the steering light?  I have checked the Pitman
and Idler arms for wear, also the ball joints - these all seem fine.  Any
other areas that I should investigate?  The floaty feel makes the truck feel
unsafe at speed and when braking.

Any and all help appreciated.