Circuit/System Testing (5.3L and 3.9L Engine)
- Engine ON, transmission in park, vary the engine speed by 500 RPM.
- Verify the scan tool Engine Oil Pressure Sensor parameter changes by more than 34.5 kPa (5 psi).
- If less than 34.5 kPa (5 psi), refer to:
- Oil Pressure Diagnosis and Testing for the 5.3L engine.
- Oil Pressure Diagnosis and Testing for the 3.9L engine.
- If less than 34.5 kPa (5 psi), refer to:
- If the pressure tests normal, replace the EOP sensor.