GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Engine Block Plug Removal

Tools Required

J 41712 Oil Pressure Switch Socket


    Object Number: 823316 Size: SH

    Important: 

       • Do not remove the engine block front oil gallery plug unless service is required.
       • If the front oil gallery plug is removed for service, a NEW oil gallery plug must be installed.

  1. Remove the oil pressure sensor, if not previously removed, using the J 41712 or equivalent.

    2. Object Number: 1201542 Size: SH
  2. Remove the engine block right rear coolant drain hole plug.
  3. On vehicles equipped with RPO HP2, remove the coolant fitting.

    4. Object Number: 1276785 Size: SH
  4. Remove the engine block coolant heater, if applicable.

    5. Object Number: 63165 Size: SH
  5. Remove the engine block left front coolant drain hole plug, if applicable.

    6. Object Number: 63167 Size: SH
  6. Remove the engine block left front oil gallery plug.

    7. Object Number: 64923 Size: SH
  7. Remove the engine block left rear oil gallery plug.
  8. Inspect the block plug sealing washers.

    9. If the block plug and heater sealing washers are not damaged, they may be used during assembly.


    Object Number: 63228 Size: MH
  9. Remove the engine block rear oil gallery plug.
  10. Inspect the O-ring seal of the rear oil gallery plug.

    11. If the O-ring seal is not cut or damaged, the plug and O-ring seal may be use during assembly.


    Object Number: 64295 Size: SH

    Important: 

       • Remove the front oil gallery plug only if service is required.
       • If the front oil gallery plug is removed, a NEW oil gallery plug must be installed.

  11. Remove the engine block front oil gallery plug.