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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1622 (Instrument Panel System Displays & Gauges) >> Diagnostic Information and Procedures >> DTC P0521, P0522, or P0523 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine running, observe the scan tool Engine Oil Pressure Sensor parameter. The reading should be between 0.2-4.8 volts.
  2. Verify the engine oil pressure. Refer to Oil Pressure Diagnosis and Testing for the 3.5L engine.
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