what is the correct oil pressure reading at idle for 2001 gmc sierra 2500hd 6 liter gas engine

Asked by Dec 15, 2014 at 10:18 PM about the 2001 GMC Sierra 2500HD 4 Dr SLE Extended Cab SB HD

Question type: Maintenance & Repair

185000 miles .

1 Answer

10,065

Depends on the oil temperature, oil condition and your motor. Clean good oil when cold should be well above 30 psi. As your engine warms up the pressure will drop but at 25 or above is a good baseline. The are issues with the oil pumps and internal pressure regulators, what are you reading when cold and warm?

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