2008 chevrolet Avalanche pops up low oil pressure when on idle and the pressure guage drop to 0psi. any explanation for this?

Asked by hopilo Jul 12, 2015 at 04:30 PM about the 2008 Chevrolet Avalanche LTZ 4WD

Question type: Maintenance & Repair

2008 chevrolet Avalanche pops up low oil pressure when on idle and the pressure guage drop to 0psi. any explanation for this?

105

jj816 answered 8 years ago

I have a 2008 Avalanche and had the same thing happen as well. Oil pressure gauge would initially read a normal level then suddenly drop. After checking the oil level I took it straight to the shop. Luckily it ended up just being a bad oil pressure sensor in my truck. If the problem wasn't caused by a bad sensor I'd assume the oil pump went bad.

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Bowlerbrian25 answered 4 years ago

Had this happen to mine at 190k miles, when pressure would drop below 25 psi on gauge you will start to hear a lifter tick when cold, once it got to temp it would keep pressure over 25 psi. Long story short it turned out to be the O-Ring on the oil pump pickup tube. Once fixed, pressure never drops below 40 psi.

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2008 chevrolet Avalanche pops up low oil pressure when on idle and the pressure guage drop to 0psi. any explanation for this? 2 Answers

2008 chevrolet Avalanche pops up low oil pressure when on idle and the pressure guage drop to 0psi. any explanation for this?

2008 Chevrolet Avalanche LTZ 4WD

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Maintenance & Repair
I have a 2005 Chevy Avalanche with 218,000 miles. Oil and filter has been maintained at 3,000 mile intervals. At start, the oil pressure is in the normal range. After warm up (195 D) the oil pressure will drop if it idles down to 10psi. The low pressure alarm goes off until an increase in rpm which raises pressure. After several more minutes of running, the oil pressure is close to normal, no alarms and runs ok. There is a slight tick (possibly lifter) on the left side of the engine that has been since 75,000 miles. Should I :A- replace the engineB - Replace the oil pump, screen, flush oil panC-Let it go until motor is completely shot and replace truck / motor? 6 Answers

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I own a 5.3 2007 Avalanche. It has 160k miles. When it is first started it holds approx. 40 pounds of oil pressure, once it warms up, when idling it drops to 0 and the bell goes off. If I give it a li 2 Answers

I own a 5.3 2007 Avalanche. It has 160k miles. When it is first started it holds approx. 40 pounds of oil pressure, once it warms up, when idling it drops to 0 and the bell goes off. If I give it a li...

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