Two problems related to steering is loose have been reported for the 1999 Chevrolet Suburban. The most recently reported issues are listed below.
Steering box leaked and pinion seal leaking. Also the vehicles steeing was erractic and the steering feels loose at times at speeds above 25mph. Steering box and pinion seal were fixed. The steering sensor was checked by dealer and they said there was not a problem. Car continues to drive "erractic" for the last 2 months, occuring daily.
Steering seems loose and sloppy, vehicle wanders, same amount of input produces differrent results at different time. Almost like tie rod ends are bad. 3 trips to dealer - once said it was just speed sensitive steering; once @ 38,510 miles replaced evo sensor; again @ 39,846 miles aligned and removed knockout saying that should fix. Still wanders, feels sloppy, and makes me wonder if I'm in full control of the vehicle.