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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Engine Mechanical - 2.7L (L3B) - 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. Disconnect the electrical connector (1)
  2. GM5145482Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Pressure Sensor (1) - Remove

  3. Engine Oil Pressure Sensor Seal (2) - Remove and DISCARD
  4. GM5145483Courtesy of GENERAL MOTORS COMPANY

    Install the EN-6106  Oil Pressure Gauge Adapter (1).

  5. Install the KM-498 - B  Oil Pressure Gauge (2).
  6. Start the engine.
  7. Check the engine oil pressure.
    1. At idling speed, the oil pressure is 155 kPa (22.48 psi) and the oil temperature must be 20°C (65°F) or more.
    2. At 1500 rpm, the oil pressure is 230 - 170 kPa (33.36 - 24.66 psi) and the oil temperature must be 20°C (65°F) or more.
  8. Remove the KM-498 - B  Oil Pressure Gauge (2).
  9. Remove the EN-6106  Oil Pressure Gauge Adapter (1).
  10. Turn off the engine.
  11. GM5145482Courtesy of GENERAL MOTORS COMPANY

    Engine Oil Pressure Sensor Seal (2) - Install NEW

    12. CAUTION:

    Refer to Component Fastener Tightening Caution .

  12. Engine Oil Pressure Sensor (1) - Install and tighten 35 N.m (26 lb ft)
  13. Check the engine oil level.
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