seems normal other than the 10-15 warmed up seems a bit low, I would connect a scanner or obd sensor to it and verify against the cluster or even a mechanical gauge as mentioned just to verify. 20 warmed up at idle is considered normal. 10 or below and it will throw a code eventually.I have a 2007 yukon xl denali. Non afm.
I currently have 89k miles. On a cold start with fresh oil and filter I have just under 60 psi I'd say around 55psi once everything is warmed up the pressure is under 20 psi around 10-15 psi. Cruising at lower speed it'll be just under 40 psi highway speed or accelerating it'll go over 40 psi. Should I be worried? Is there anything I should do that can raise the warm idle psi?
Appreciate the help