End Play Check
WARNING: This page does not describe the selected car, but rather 124 other vehicles, including the 1991 Chevrolet Pickup, 1991 Chevrolet Cab & Chassis, 1988 GMC Vandura Special, 1988 GMC Vandura, and 1988 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.
Install Torque Converter End Play Checker (J-21371). See Fig 1. Converter end clearance should be less than .024" (.60 mm). If clearance is greater than specification, replace torque converter assembly.