Question about 2003 GMC Envoy

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My envoys oil pressure drops to nearly zero at stop signs

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  • augieguerrer Apr 26, 2010

    the oil pressure gauge is the only gauge that fluctuates. this problem started the day after my wife had the oil changed and put regular oil in instead of the full synthetic it has had for the last 30,000 miles. could that be why?

  • augieguerrer Apr 26, 2010

    oh yes, i forgot...the stop engine now light comes on until you give it gas and everything goes back to normal until the next stop light

  • Ssgt. Chip Webber USMC
    Ssgt. Chip Webber USMC May 11, 2010

    If you've checked the oil level and it is full, you may have a problem with the oil pump. There are many things that could cause the oil pump to fail. Is the check engine light on? Is the oil full? What are the rpm's at idle?

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Yes, the natural oil could indeed be the problem, have it exchanged for synthetic immediately. Let me know what happens please. Thank you.

Posted on Apr 27, 2010

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1 Answer

When im driving or giving car gas oil pressure is good, if car stops moving and gets no gas oil pressure drops to zero? I drive a 2007 gmc envoy 4.2 liter. Any ideas everyone says just a bad motor.


Are you hearing a knocking coming from the engine if so yeah there may be a rod getting ready to go soon which would be an engine replacement. Have you checked the oil levels? It could also be an oil pump or oil pressure sensor. There are many things to consider and many things it could be.

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2004 gmc envoy. Oil gauge drops to zero when stopping. Car had been running for about 1hour in city traffic.


have the oil pressure checked using a mechanical pressure gauge
most likely a problem oil pressure sender unit or broken wire

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2005 GMC envoy Oil pressure drops to zero when stopped if in a drive thru the car over heats. AC off its ok. Oil level/pressure fine replaced clutch fan wire harness(pigtail)replaced water pump.


The oil pressure drop indicates more problems.

Oil pressure drops to zero at idle on 2002 GMC Envoy after ...

www.fixya.com/cars/t7880379-oil_pressure_drops_zero_idle_2002_gmc Jan 18, 2011 - You could have three possable problems that I can think of. 1) Your oilviscosity is too low and you need to change it to a higher level. A 5w/30 .

Jul 21, 2015 | GMC Cars & Trucks

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My 2005 Envoy's low oil pressure light will come on when I am at a stop and my car is ideling. My oil gauge will also drop. I just change the oil and filter about 1 month ago


When engine is idling the oil pressure sign can come up and that is OK. However if you've noticed that gauge shows much lower oil pressure that a bad sign. Show it to knowledgeable mechanic (but don't be lured in the engine replacement; ask for a root cause - it may be oil receiver or oil pump). Also I hope there's no oil puddles under the car? What about oil level?

Apr 24, 2015 | 2005 GMC Envoy

1 Answer

Why is my 2007 envoy denali oil pressure dropping?


check oil level in sump. You may have to remove the sump to check for cracked oil pick up line . Check oil pump pressure regulator . replace oil filter as it may be blocked and dropping the oil straight back to the sump.

Mar 14, 2014 | 2007 GMC Envoy Denali

1 Answer

Oil pressure drops to 0


The sending unit should be near the distributor on top of the engine.

Feb 05, 2014 | 1998 Dodge Dakota

1 Answer

Oil pressure low stop engine light and check gauges light


It could be your oil pressure sensor has gone bad.

Jan 10, 2013 | 2003 GMC Envoy

1 Answer

If pickup tube on the oil pan is bad will my oil pressure drop to zero at stops and at acceleration go back up


IT IS POSSIBLE ,BUT YOU SHOULD USE A MECHANICAL OIL PRESSURE GAUGE TOO COMFORM IT IS NOT A BAD OIL PRESSURE SENDER OR GAUGE

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Oil pressure drops to zero at idle on 2002 GMC Envoy after engine warms up


You could have three possable problems that I can think of. 1) Your oil viscosity is too low and you need to change it to a higher level. A 5w/30 or 10w/30 oil may thin out too much when it warms up to normal temp and shows low on your gauge. 2) The preasure relief valve is partially open due to a small piece of debris caught under the seat. Unscrew the oil filter and look at the small disk that is near the threded part on the filter base. Theres a spring behind it to keep it closed so all the oil goes into the engine and not bypass back into the oil pan. Push up on it slightly with a small tip screw driver and see that it fully seats in the hole, put a new filter on, and try it. 3) If these two things don't improve the condition, get a socket for taking the oil preasure sender off and get a oil preasure gauge to test the actual oil preasure the engine is producing. You may have a weak pump in the engine. If the preasure is within good specs, I'd change the sender unit with a new one.
Let me know what happened-
Craig

Jan 18, 2011 | 2002 GMC Envoy

1 Answer

2002 gmc envoy oil pressure flux. maybe.


An oil pressure sending unit is really not an expensive item nor difficut to change . Probably the answer , sending units faulter frequently. Hope this helps

Apr 13, 2009 | 2003 GMC Envoy

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