Question about 2002 GMC Sierra 2500HD

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The oil pressure gauge in my 2002 Duramax Diesel engine PU increases during acceleration and returns to normal following acceleration. Why would this happen?

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  • toneman2121
    toneman2121 Jun 01, 2010

    i would start with an oil and filter change

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  • 343 Answers

That is normal. As you accelerate and rpm's increase the oil pump rpm increases. I think the oil pump runs 1 to 1 or 2 to 1 with the crankshaft rpm. Check the oil and inspect for any visual leaks if the gauge does not operate like that consistently. If it is intermittent or it just started acting that way, the sender my be bad. Other than that any Chevy Dealer will say that is normal.

Posted on Jun 01, 2010

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