Thrust Bearing
WARNING: This page is about a different car, the 1999 Cadillac Catera and 1998 Cadillac Catera. However, it is still accessible from the selected car via links, so may be relevant.
With crankshaft bearing caps and torsional bearing bridge installed, mount a dial indicator onto back of engine block. Move crankshaft forward and rearward, noting total movement. If movement exceeds specifications, replace the thrust bearings. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table under ENGINE SPECIFICATIONS.