why is my oil pressure gauge pegged on high? 2003 GMC Sierra 5.3L
What is your question?
I have noticed that my oil pressure gauge is pegged to High. I don't even have to start my truck, just turn the ignition on.
Of course it is stilled pegged after I start the engine and drive 45 miles like I just did yesterday. When I turn off the ignition it goes back to Low. I checked my oil level to see if that was affecting it but it read normal.
Thanks for your help
Alan
What makes this problem better or worse?
N/A
How long has your 2003 GMC Sierra 1500 had this problem?
RepairPal Certified shops can diagnose and repair your 2003 GMC Sierra 1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hello, if the key is on and the engine is off and the gauge is pegged high, there must be a sending unit or wiring concern. Inspect the related circuit.
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