Question about 2003 GMC Envoy

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Oil pressure low stop engine light and check gauges light

My gmc envoy 2003 oil pressure low, stop engine light has come on a few times. Recently this has come up and also the check gauges light and the oil pressure has dropped to 0. I turned the car off for a few and when I turned it back on everything went back to normal. I have checked the oil. Can someone tell me what this could be?

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It could be your oil pressure sensor has gone bad.

Posted on Jan 10, 2013

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Posted on Jan 02, 2017

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SOURCE: 2007 GMC Envoy - Gas gauge showing empty and check engine light

This is a safety feature that the vehicle brings. You need to reset the E.C.U on dealership or it will keep doing it to you. It was probably caused by one single time that you did not closed the fuel cap correctly. Good luck

Posted on Dec 29, 2009

wireguy212
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SOURCE: 2002 Envoy I come to a stop and my oil gauge drop

Try a new oil pressure switch first,if that does'nt repair the problem then get the oil pressure tested.If it tests low then the problem is internal and the motor meeds to be dissasembled.

Posted on Nov 10, 2009

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2 Answers

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

I have 2002 gmc envoy, oil pressure low, stop engine warning only comes on when i stop on a hill?


The pressure regulator in the oil pump may not be working, the idle speed may be too low and there may be a lot of wear on internal engine parts lowering oil pressure

May 30, 2014 | 2002 GMC Envoy

2 Answers

Oil pressure gauge reads 78


not all cars read the same,when the engines come down the assembly line they can vary from 15lbs ,just about enough to make the oil pressure light go out to anything up to 70lbs ,this depends on the clearances withing the engine so a decent oil pump and low tolerances can give this reading where as a engine with sloppy clearances will be low so ignore the pundits and bar room mechanics and leave well alone

Sep 28, 2012 | 2003 GMC Envoy

1 Answer

How do I check and possibly replace the engine oil pressure sensor in a 2006 GMC Envoy Denali?


Oil Pressure Test Check for proper oil pressure at the sending unit passage with an externally mounted mechanical oil pressure gauge. A tachometer may also be needed, as some specifications may require running the engine at a specific RPM.
  1. While the engine is cold, locate and remove the oil pressure sending unit.
  2. Following the manufacturer's instructions, connect a mechanical oil pressure gauge and, if necessary, a tachometer to the engine.
  3. Start the engine and allow it to idle.
  4. Note and record the oil pressure reading when the engine is cold. The engine may need to run at a specified RPM, if so check the vehicle's specification.
  5. Run the engine until normal operating temperature is reached.
  6. Check the oil pressure reading again with the engine hot and record the value. Turn off the engine.
Compare the hot oil pressure reading to the specification. If the reading is low, check the cold pressure reading against the specification. If the cold pressure is well above the specification, and the hot reading was lower than the specification, the engine may have the wrong viscosity oil. Change the oil, making sure to use the proper grade and quantity, and then repeat the test.
Low oil pressure readings could be attributed to internal component wear, pump related problems, a low oil level, or oil viscosity that is too low. High oil pressure readings could be caused by an overfilled crankcase, too high of an oil viscosity or a faulty pressure relief valve.

Oct 09, 2010 | 2006 GMC Envoy Denali

1 Answer

As soon as i turn motor on the check gauge light comes on - the oil pressure drops and then the instrument panel said stop motor - it has not been running for a couple years


Check the oil level in the engine. Have the oil pressure checked with a manual gauge hooked directly up to the engine to see if the pressure is good.

Sep 28, 2010 | 2003 GMC Envoy Xl

1 Answer

When throtling and transmission is shifting low oil pressure stop engine appears across the message center


The engine oil pressure need to be tested with a manual gauge hooked up to the engine to get an actual oil pressure reading.

Sep 28, 2010 | 2003 GMC Envoy Xl

1 Answer

2004 envoy sounds as if it has no oil. no oil lights are on though. where should the oil pressure gauge be ? the need is in the middle. It sounds as if it is riding hard. I remember a car I had that...


The Envoy's oil pressure gauge is not showing actual oil pressure, the computer calculates the reading based on engine RPM and the on or off signal from the oil pressure switch. You need to first check the oil level on the dipstick, than have a mechanic put a manual oil pressure gauge on the engine to read the actual oil pressure.

Sep 25, 2010 | 2003 GMC Envoy

1 Answer

2002 Envoy I come to a stop and my oil gauge drop and check gauge come on and readout say low oil pressure and sometime engine shut down. push on gas thimg go back to normal. this doesnt happan all the...


Try a new oil pressure switch first,if that does'nt repair the problem then get the oil pressure tested.If it tests low then the problem is internal and the motor meeds to be dissasembled.

Nov 10, 2009 | 2002 GMC Envoy

1 Answer

Oil pressure low ,stop engin this message appear in computr car envoy 2003


Check oil level via dipstick , if it is full check oil filter is not blocked (You need to have a mechanical knowledge to do this ) if both ok then oil pump is on its way out or there is a blockage in the engine oilways

Nov 01, 2009 | 2003 GMC Envoy

2 Answers

03 gmc envoy with 5.3 140000 miles. Oil pressure reading fluxuates between 0 and 40. When problem first started pressure read 80. When vehicle was new it stayed at midpoint (40) vehicle has plenty of oil....


There may be a loose wire or the gauge or sending unit may be going bad. The first thing I would do is to hook up a temporary oil pressure gauge, not using the old one at all. With this watch gauge while driving and see what readings you get. If the readings still jump around you have a pump that is getting weak and failing, If that is the case the pump should be replaced, but with high milage you may consider rebuilding the entire engine. If the readings stay normal start checking for a loose wire at gauge or sender. Then check sender, then gauge and replace as needed.

Oct 02, 2009 | 2003 GMC Envoy Xl

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