Brand New Engine Oil Pressure Sensor Sender Switch Fits Numerous GM Cars & Trucks; View Compatibility Chart Or Verify OE Part Number Below Typically Solves DTC Diagnostic Trouble Code PO520, PO521, PO522, PO523, PO524 It is very important to change your oil at the recommended intervals spelled out in your owners manual. Failure to change the oil at recommended intervals can lead to numerous engine issues and trouble codes that relate to this sensor and others including variable valve timing issues. Replaces 12673134, 12621234, 213-4411