GMC T Series 1994 Repair Manual page 469

Figure 27— Removing the Torsional Damper
3. Crankshaft. Lift the crankshaft straight up. Use care
to avoid damage to the crankshaft journals and
thrust flange surfaces.
4. Rear seal (131).
70. Oil Pump
71. Oil Pan
72. Bolt
73. Nut
74. Gasket
75. Reinforcement
Figure 28— Oil Pan (5.0L and 5.7L Engines)
5. Main bearing inserts (135 and 136). If the main
bearings are to be reused, mark them to ensure
they are installed in their original positions before
removal.
F9364