GM Service Manual Online
For 1990-2009 cars only

Oil Filter Adapter Disassemble without Oil Cooler


    Object Number: 651262  Size: SH
  1. Remove and inspect the bypass hole plug (1).
  2. Remove and inspect the oil filter fitting (2).
  3. Remove and inspect the oil pressure switch (3).
  4. Remove and discard the oil filter adapter O-rings (4).

Oil Filter Adapter Disassemble with Oil Cooler


    Object Number: 651258  Size: SH
  1. Remove and discard the oil cooler line connector fittings (1).
  2. Remove and inspect the oil filter fitting (2).
  3. Remove and inspect the oil pressure switch (4).
  4. Remove and discard the oil filter adapter O-rings (5).
  5. Remove and inspect the oil cooler bypass valve hole plug (8).
  6. Remove and discard the oil cooler bypass valve hole plug O-ring (7).
  7. Remove and inspect the oil cooler bypass valve (6).