Why is my oil pressure light coming on in my 2009 silverado 5.3 lt? always change my oil..even back it up with a qt of Lucas oil treatment! engine puurs like a kitten...no smoke blowing...no knocking

Asked by Dec 15, 2014 at 11:04 AM about the 2009 Chevrolet Silverado 1500 LT1 Ext. Cab

Question type: Maintenance & Repair

Always maintain my oil with 1 qt of Lucas to back it up!! engine purrs like a kitten..no
smoke...no knocking what so ever!! read maybe a dirty screen near the sending unit??
can u elaborate?? 2009 silverado LT Z71

1 Answer

16,465

It may be a bad sensor. They have been know to fail. If you can, have someone hook up a test gauge and see what the readings are. If they mirror what the dash gauge reads, change out the sensor. First I'd clean the connections and make sure it is on tight.

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