GM Caprice 1990-1993 Repair Guide
REMOVAL & INSTALLATION
Raise and safely support the vehicle.
Place a suitable container under the differential. Remove the carrier cover and drain the gear oil.
Remove the drive axles.
Mark the differential bearing caps
to make sure they will be reassembled in their original location.
Using a suitable tool, remove the differential carrier. Be careful not to damage the gasket sealing surface when removing the unit. Place the right and left bearing outer races of the side bearing assemblies and shims in sets with the marked differential bearings caps so they can be reinstalled in their original positions.
Inspect the differential carrier housing for foreign material. Check the ring and pinion for chipped teeth, excessive wear and scoring. Check the carrier bearings visually and by feel. Clean the differential housing and replace components, as necessary.
Install the differential carrier. Check the carrier bearing preload and ring and pinion backlash and adjust, as necessary. Tighten the differential bearing cap bolts to 55 ft. lbs. (75 Nm).
Install the axles.
Install the carrier cover using a new gasket. Tighten the carrier cover bolts to 20 ft. lbs. (27 Nm). Add the proper type and quantity of gear oil to axle assembly.