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HOMESERVICE MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 138 (ENGINE MECHANICAL - 6.0L (L96))REPAIR INSTRUCTIONS - OFF VEHICLEENGINE BLOCK PLUG INSTALLATION
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol

Engine Block Plug Installation

2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Engine Block Plug Installation
WARNING: This page is about a different car, the 2019 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM1552549Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Engine block plug, oil gallery, and coolant sealing washers may be used again if not bent, scored or otherwise damaged.

    Apply a 3.175 mm (0.125 in) bead of sealant to the engine block coolant heater sealing washer (115), if applicable. Adhesives, Fluids, Lubricants, and Sealers 

    2. CAUTION:

    Refer to Fastener Caution .

  2. Install the engine block coolant heater (114) to the engine block and tighten to 50 N.m (37 lb ft).
  3. GM63164Courtesy of GENERAL MOTORS COMPANY

    Apply a 3.175 mm (0.125 in) bead of sealant to the engine block right rear coolant drain hole plug sealing washer. Adhesives, Fluids, Lubricants, and Sealers 

  4. Install the engine block right rear coolant drain hole plug and tighten to 60 N.m (44 lb ft).
  5. GM1552550Courtesy of GENERAL MOTORS COMPANY

    Apply a 3.175 mm (0.125 in) bead of sealant to the engine block left front oil gallery plug sealing washer (117). Adhesives, Fluids, Lubricants, and Sealers 

  6. Install the engine block left front oil gallery plug (116) and tighten to 65 N.m (48 lb ft).
  7. GM1552551Courtesy of GENERAL MOTORS COMPANY

    Apply a 3.175 mm (0.125 in) bead of sealant to the engine block left rear oil gallery plug sealing washer (113). Adhesives, Fluids, Lubricants, and Sealers 

  8. Install the engine block left rear oil gallery plug (112) and tighten to 60 N.m (44 lb ft).
  9. GM63228Courtesy of GENERAL MOTORS COMPANY

    Inspect the engine block rear oil gallery plug and O-ring seal. If the O-ring seal on the plug is not cut or damaged, the rear oil gallery plug may be used again.

  10. Lubricate the O-ring seal with clean engine oil. Adhesives, Fluids, Lubricants, and Sealers 
  11. Install the O-ring seal onto the plug.
  12. Install the engine block rear oil gallery plug into the oil gallery bore. A properly installed block plug will protrude 0.8 - 1.4 mm (0.0315 - 0.055 in) beyond the rear face of the block.
  13. GM1552553Courtesy of GENERAL MOTORS COMPANY

    Apply threadlock to the sides of the NEW front oil gallery plug (101). Adhesives, Fluids, Lubricants, and Sealers 

  14. GM64295Courtesy of GENERAL MOTORS COMPANY

    Install a NEW engine block front oil gallery plug. Install the plug into the oil gallery bore 2.2 - 2.8 mm (0.0086 - 0.011 in) below flush.

  15. GM1402136Courtesy of GENERAL MOTORS COMPANY

    Install the left side knock sensor (718) and bolt (739) and tighten to 25 N.m (18 lb ft).

  16. GM1402140Courtesy of GENERAL MOTORS COMPANY

    Install the right side knock sensor (718) and bolt (739) and tighten to 25 N.m (18 lb ft).

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.