GM Service Manual Online
For 1990-2009 cars only

Crankshaft End Play Measurement

  1. Place a dial indicator at the crankshaft nose.
  2. Gently force the crankshaft to the extreme front and rear positions with a pry tool while monitoring the movement of the dial indicator.
  3. The crankshaft end play should not exceed specifications. Refer to Engine Mechanical Specifications.
  4. If the specifications are exceeded inspect the thrust bearing thrust OD and the crankshaft thrust wall for wear and/or excessive runout. Refer to Engine Mechanical Specifications.
  5. Replace the thrust bearing or crankshaft as necessary.

Crankshaft And Bearing Removal


    Object Number: 2026781  Size: SH
  1. Loose the 10 crankshaft bearing cap bolts as shown in sequence.

  2. Object Number: 2026657  Size: SH
  3. Remove the 10  crankshaft bearing cap bolts (1, 2).
  4. Remove the 5 crankshaft bearing caps (3).
  5. Using 2 hands, lift the crankshaft straight up from the engine block.
  6. Place the crankshaft in a secure place.
  7. Prepare a piece of cardboard or equivalent, numbered  (1-5) for bearing identification. Main bearing journals are numbered from the front of the engine.
  8. Remove the 10 crankshaft bearing halves (4) from the cylinder block and the crankshaft. Note the position of the thrust bearing.
  9. Place the 10 crankshaft bearing (4) on the cardboard in the correct positions.

  10. Object Number: 2026783  Size: SH
  11. Remove the 3 increment wheel bolts (2).
  12. Remove the increment wheel (1).