GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 CTS 🢒 Engine 🢒 Engine Mechanical - 3.6L (LY7) 🢒 Oil Pump Disassemble

    Object Number: 902918 Size: SH

    Important: There are no serviceable components within the oil pump. Disassemble the pump only to diagnose an oiling concern. A disassembled oil pump must not be reused. A disassembled oil pump must be replaced.

  1. Remove the oil pump mounting bolts.

    2. Object Number: 902919 Size: SH

    Important: The primary camshaft drive chain lower guide is not a serviceable component. If the primary camshaft drive chain lower guide is to be reused, the primary camshaft drive chain lower guide is not to be removed from the oil pump cover. If the primary camshaft drive chain lower guide must be replaced, the oil pump must be replaced.

  2. Remove the primary camshaft drive chain lower guide bolts.
  3. Remove the primary camshaft drive chain lower guide.

    4. Object Number: 902921 Size: SH
  4. Remove the bolts holding the oil pump cover to the oil pump housing.
  5. Remove the oil pump cover from the oil pump housing.

    6. Object Number: 902922 Size: SH
  6. Remove the inner oil pump drive gear.
  7. Remove the outer oil pump driven gear.

    8. Object Number: 902923 Size: SH
  8. Remove the clip, holding the cap, for the oil relief valve components.
  9. Remove the cap, spring and plunger from the oil pump housing.