Victim is a 1999 GMC Sierra 1500 Z71 (Classic body style) with a vortec 5.7l. The truck is all stock. Nothing changed from oem (tires, engine, suspension).

The problem is that as soon as i picked it up in 2005 the steering wheel would have to be around 11 oclock postion to keep straight. I replaced all ball joints, tie rods, idler and pitman arm with moog parts and a 4 wheel alignment. The control arm bushings appeared ok to me and others.

Within a year the idler arm will be shot.... the steering wheel works its way back toward the 10 oclock position to keep the truck straight. The truck pulls to the right if you let go of the steering. I feel no looseness turning steering to the left but when i go back from left toward center i feel slack getting taken up. Brakes have been gone over many times and no stuck caliper.

Steering gearbox getting worn beyond its usefull life? Anyone else have this experience with their mid to late 90's fullsize?