2000 Chevy Silverado clattering lifters

2000 CHEVROLET SILVERADO
11,200 MILES • V8 • 2WD • AUTOMATIC
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KREY1348
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My 2000 chevrolet Silverado pickup truck lifters has clattered some since new. Over years they have got louder. I use castrol 10w30 oil. I have since changed to 10w40. When I crank it, oil pressure is real good. After about 30 seconds it starts to clatter. Then it gets louder over about a 1/12 minutes. Then it subsides and goes away.
Feb 21, 2010 at 8:49 AM
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JACOBANDNICKOLAS
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Is the noise heard under acceleration or heavy load?

Let me know.
Joe
Feb 22, 2010 at 9:40 AM
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KREY1348
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[quote:77d04570df="Jacobandnickolas"]Is the noise heard under acceleration or heavy load?

Let me know.
Joe[/quote:77d04570df]. No, it is first thing in am when you crank it up. It last about 1 1/2 minutes then it is fine. It has got louder over the years.
Feb 24, 2010 at 3:10 PM
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JACOBANDNICKOLAS
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It sounds like lifter noise. I just looked up the recommended oil weight, and it is what I thought, 5W30. 5W30 is lighter at cold start to help circulate the oil faster. That is what is recommended. I don't know the temps you live in, but if they are cool or cold, that could be the problem.
Feb 24, 2010 at 7:39 PM