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Have a 2007 Envoy the oil pressure gauge drops when either driving uphill or stopped on an incline. What's wrong?

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Dear Heather,
Here is what might be wrong.
1) You do not have enough oil in the engine, and the oil pump has quit pumping the oil when the level of the oil is not reaching the pick-up screen.
2) The pick-up screen is clogged with dirt or sediment, and not allowing the oil to get to the pump due to being plugged up.
3) The oil pump is failing due to an internal problem, such as being mis-cast from the factory.
In any regard, this problem is most serious, and can result in the engine "blowing-up", so please do not drive it until it is fixed.
God bless your efforts.
P.S.
If your mechanic says you do not have a problem, have him or her install an oil pressure test gauge to the screw-in port on the engine, and read the real pressure whilst driving it.

Posted on Dec 23, 2016

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Posted on Jan 02, 2017

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