GM Service Manual Online
For 1990-2009 cars only

    Object Number: 465927  Size: SH
  1. Remove the lower crankcase (1-12) and the main bearing cap (13-22) bolts in the sequence shown.

  2. Object Number: 466309  Size: SH

    Important: Do not gouge the sealing surfaces of the two halves of the cylinder block during disassembly.

  3. Carefully pry the lower crankcase apart from the cylinder block using a screwdriver.
  4. Carefully remove the lower crankcase with the lower bearing inserts.
  5. Notice: Remove the crankshaft carefully in order to avoid damaging the crankshaft journals, the rod, the main bearing inserts, or the connecting rods.


    Object Number: 466304  Size: SH
  6. Remove the crankshaft and the oil pump drive chain from the cylinder block.
  7. Remove the bearing inserts from the block.