GM Service Manual Online
For 1990-2009 cars only
  1. Before removing the crankshaft, measure the crankshaft end play. Use the following procedure:
  2. 1.1. Reinstall the lower crankcase.
    1.2. Place a dial indicator at the crankshaft nose.
    1.3. Gently force the crankshaft to the extreme front and rear positions with a pry tool while monitoring the movement of the dial indicator.
    1.4. The crankshaft end play should not exceed 0.05-0.5 mm (0.002-0.020 in).
    1.5. If the specifications are exceeded, replace the thrust bearing.
    1.6. If a new thrust bearing does not bring the tolerances within specification, replace the crankshaft.
    1.7. Remove the lower crankcase.
  3. Locate or fabricate two v-blocks to support the crankshaft.

  4. Object Number: 54234  Size: SH
  5. Using two hands, lift the crankshaft straight up from the engine block.
  6. Place the crankshaft on the v-blocks in a secure place.