2009 Chevrolet Silverado 1500 Code P0521

Question

I have had it into the dealer 4 time for the same thing PO521 repalced the wireing harness once & replaced the sending unit 3 times Cleaned the screen in back of the sending unit once . fifth time today

Answer 1

P0521 CHEVROLET - Engine Oil Pressure Sensor/Switch Circuit Range/Performance

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