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Home >> Chevrolet >> 2023 >> Tahoe SSV >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Oil Pressure Diagnosis and Testing >> Procedure

Oil Pressure Diagnosis and Testing: Procedure

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  1. Raise and support the vehicle. Lifting and Jacking the Vehicle
  2. GM5138953Courtesy of GENERAL MOTORS COMPANY

    Oil Filter (1) - Remove and DISCARD

  3. GM5138957Courtesy of GENERAL MOTORS COMPANY

    Install the EN-52486  Oil Pressure Gauge Adapter (1).

  4. Install the J-21867  Pressure Gauge (2).
  5. Lower the vehicle.
  6. Start the engine.
  7. Check the engine oil pressure. The pressure specifications listed below represent oil temperature measured between 19°C to 126°C (66°F to 259°F).
    1. At 1000 rpm the desired oil pressure is 152 - 218 kPa (22 - 32 psi)
    2. At 2500 rpm the desired oil pressure is 177 - 280 kPa (26 - 41 psi)
    3. At 4000 rpm the desired oil pressure is 320 - 400 kPa (46 - 58 psi)
    4. The "Oil Pressure Low Turn Vehicle Off" warning message will be displayed on the driver information center when pressures fall below the following values for more than 2 seconds of run time:
      • 35 kPa (5 psi) at 1000 rpm
      • 50 kPa (7.25 psi) at 2500 rpm
      • 160 kPa (23 psi) at 4000 rpm
  8. Turn the engine OFF.
  9. Raise the vehicle.
  10. Remove the J-21867  Pressure Gauge (2).
  11. Remove the EN-52486  Oil Pressure Gauge Adapter (1).
  12. GM5138953Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Coat the oil filter seal with a thin film of fresh engine oil.

    Oil Filter (1) - Install and tighten - 3/4 to 1 full turn after gasket makes contact with the sealing surface on the filter mounting flange

  13. Lower the vehicle.
  14. Check the engine oil level.