2001 chevy suburban 5.3 NO OIL PRESS - Team Camaro Tech
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post #1 of 3 (permalink) Old May 26th, 17, 12:47 PM Thread Starter
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2001 chevy suburban 5.3 NO OIL PRESS

2001 Chevy Suburban 5.3 no oil pressure. 73,000 miles on engine. Truck was babied. Gauge reads zero pressure and it sounds like NO oil pressure. EXCLUDING the oil pump, any ideas anyone ??? I read there is an oil pressure sending unit screen/filter, wonder if this is the problem ?? Thx

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post #2 of 3 (permalink) Old May 26th, 17, 01:05 PM
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Re: 2001 chevy suburban 5.3 NO OIL PRESS

If you are hearing valve train noise indicating lack or oil pressure, or you have verified with a mechanical gauge, then I would suspect that the oil pump pickup may have fallen off. You could try overfilling the crankcase with a couple extra quarts just to see if it is able to pick that oil up, but I would try to avoid running it.
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post #3 of 3 (permalink) Old May 29th, 17, 08:22 PM
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Re: 2001 chevy suburban 5.3 NO OIL PRESS

Most likely a stuck relief valve in the pump. Drop the pan and you can get to it for inspection. The oil pump is right behind the timing cover. If its 2wd you can have the pan off in under a half hour. 4wd you need to unbolt the front diff from the frame for clearance. You can leave the axles and driveshaft attached. When the pan is down, look for any foreign objects or material. Once about 5 years ago I found an oil galley plug lying in the bottom of the pan of a 6.0 that had fallen out since it was not properly installed at the factory.
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