2007 Chevrolet Suburban 1500 Q&A
2007 Chevrolet Suburban 1500 Question: How do I check the elect. circuit on the wiring of an oil pressure sending unit?
Before replacing an oil pressure switch, a professional mechanic will first determine that the oil level and condition are okay, that the oil light electrical circuit is operating normally, and most importantly, that the oil pressure is within the manufacturer's specifications. - FranklinPattison
ground the sending unit wire while disconnected from sending unit and the gauge should go to max pressure - globalhelper
Problem Description: P0521 & P0523. GAUGE INOP AND ENGINE LIGHT ON. CHECK OUT & REPLACED OIL PRESSURE SENSOR AND SCREEN BELOW IT. SAVE YOURSELF SOME TIME AND ORDER A NEW SCREEN AS IT WILL LIKELY TEAR WHEN YOU TRY TO GET IT OUT TO CLEAN IT. NOTE - NEED TO REMOVE INTAKE TO GET AT IT. - PARTS GUY