GM Service Manual Online
For 1990-2009 cars only

    Object Number: 2146307  Size: SH
  1. Remove the bedplate perimeter bolts (3).
  2. Note: Do not forget the 2 outside rear bolts (4).

  3. Remove and discard the crankshaft bearing bolts (2).
  4. Using the pry-points and an appropriate prying tool, gently separate the upper and lower crankcase (1).