06 chevy Silverado 1500

Asked by Trippy929 Dec 11, 2020 at 04:52 PM about the 2006 Chevrolet Silverado 1500 1LT Crew Cab 4WD

Question type: Maintenance & Repair

So my 06 chevy has about 10 to 15 psi at start up
and gets lower at idle going down the road it's at
about 30 to 35 psi. Just changed the oil today.
Truck has around 270,000 miles any help would be
awesome.

3 Answers
27,530

oilyspill answered 3 years ago

I don't know liter size of engine? I looked at 5.3L. Fuel pressure, key on engine off, 55--62 psi. Sounds like the pump, to me. You can check good voltage and ground at the pump. If the engine size is different, you might let us know. Just my opinion.

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3,105

JRKMotorZ answered 3 years ago

Sounds like your internal engine components are wearing which is normal on 270k mileage. You could run premium 10w-30 oil to build your oil pressure up.

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157,555

James answered 3 years ago

At that mileage I'd suspect you're seeing the first signs of worn bearings. You can use a heavier weight oil to buy you some time. But I believe your engine is near the end of its useful life. Hope that helps! Jim

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