GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 41712 Oil Pressure Switch Socket


    Object Number: 182855  Size: SH

    Caution: Wear safety glasses in order to avoid eye damage.

  1. Remove the transmission locator pins, if required.

  2. Object Number: 521820  Size: SH
  3. Remove the S type pin, and the crankshaft rear oil seal housing, if required.

  4. Object Number: 182854  Size: SH
  5. Remove the expansion cup plug from the camshaft rear bearing hole.

  6. Object Number: 333649  Size: SH
  7. Remove the engine oil pressure gage sensor using the J 41712 .

  8. Object Number: 333652  Size: SH
  9. Remove the engine oil pressure sensor gage sensor fitting.

  10. Object Number: 69847  Size: SH
  11. Remove the engine block oil gallery plugs from the rear of the engine block and discard.

  12. Object Number: 182841  Size: SH
  13. Remove the left side rear and left rear top engine block oil gallery plugs.

  14. Object Number: 182838  Size: SH
  15. Remove the engine block oil gallery plugs from the front of the engine block and discard.
  16. Insert a 3/8 x 26 inch rod into the rear oil gallery holes in order to drive out the front engine block oil gallery plugs.


    Object Number: 500648  Size: SH
  17. Remove the engine block core hole plugs.
  18. 9.1. Use a suitable tool in order to drive the engine block core hole plug into the coolant jacket.
    9.2. Use a suitable tool in order to pull the engine block core hole plug from the coolant jacket.
    9.3. Discard the engine block core hole plug.
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