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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 4 (ENGINE MECHANICAL - 8.1L)REPAIR INSTRUCTIONSOFF-VEHICLE REPAIR INSTRUCTIONSENGINE BLOCK PLUG INSTALLATION
2006 Chevrolet Suburban C1500, 5.3 Z

Engine Block Plug Installation

2006 Chevrolet Suburban C1500, 5.3 ZSECTION Engine Block Plug Installation
WARNING: This page is about a different variant/trim than selected.

Tools Required 

J 41712  Oil Pressure Switch Socket

    Fig 1: View Of Engine Coolant Drain Hole Plug
    GM635657Courtesy of GENERAL MOTORS CORP.
  1. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the engine coolant drain hole plug.
    2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the engine coolant drain hole plug into the block.

    Tighten:  Tighten the engine coolant drain hole plug to 60 N.m (40 lb ft).

    3. Fig 2: View Of Engine Block Coolant Heater
    GM635660Courtesy of GENERAL MOTORS CORP.
  3. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the engine block coolant heater, if applicable.
  4. Install the engine block coolant heater into the block.

    Tighten:  Tighten the engine block coolant heater to 50 N.m (37 lb ft).

    5. Fig 3: View Of Top Oil Gallery Plugs
    GM471137Courtesy of GENERAL MOTORS CORP.
  5. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the oil gallery plugs.
  6. Install the engine block top oil gallery plugs.

    Tighten:  Tighten the top oil gallery plugs to 20 N.m (15 lb ft).

    7. Fig 4: View Of Engine Block Left Oil Gallery Plug
    GM471138Courtesy of GENERAL MOTORS CORP.
  7. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the left side oil gallery plug.
  8. Install the engine block left side oil gallery plug.

    Tighten:  Tighten the left side oil gallery plug to 30 N.m (22 lb ft).

    9. Fig 5: View Of Front Oil Gallery Plugs
    GM471133Courtesy of GENERAL MOTORS CORP.
  9. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the front oil gallery plugs.
  10. Install the front oil gallery plugs.

    Tighten:  Tighten the front oil gallery plugs to 30 N.m (22 lb ft).

    11. Fig 6: View Of Rear Oil Gallery Plugs
    GM471134Courtesy of GENERAL MOTORS CORP.
  11. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the rear oil gallery plugs.
  12. Install the rear oil gallery plugs.

    Tighten:  Tighten the rear oil gallery plugs to 20 N.m (15 lb ft).

    13. Fig 7: View Of Engine Block Oil Cooler Hose Fittings
    GM471126Courtesy of GENERAL MOTORS CORP.
  13. Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads of the engine block oil cooler hose fittings.
  14. Install the engine block oil cooler hose fittings.

    Tighten:  Tighten the engine block oil cooler hose fittings to 23 N.m (17 lb ft).

    15. Fig 8: View Of Left Side Knock Sensor
    GM471081Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.