Question about 2003 GMC Sierra 1500

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Oil pressure gauge reads 80 while running

Stuck oil pressure gauge gmc 1500

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  • D Smart May 24, 2009

    Oil pressure gauge goes to 80 psi on my 03 gmc sierra and stays there.

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Could be one of two things, oil pressure switch (located on top of engine behind intake) or instrument panel cluster, if your vehicle has under 70,000 miles, it's covered under warrenty

Posted on Jun 19, 2009

  • vikefan54 Mar 23, 2011

    Problem is likely the stepper motors. They will need replacement. In my situation, the coldest morning (say 40 degrees) the oil pressure gauge would not return to 0 at shutdown. It would gradually show higher and higher pressures. Gradually it would peg out and eventually return back to zero. Might take a few days. I have just begun to get minor indications of the temp gauge acting up. There are repair facilities at about $170 or you can buy a new one for around $270.

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1 Answer

I have a 2003 GMC Sierra 1500 and my Oil gauge went to 80 Can't figure out what it is I think its a sensor But I'm not sure


Your oil pressure sensor is not very expensive and is easy to change, I would start with that. If it does not cure your issue I would suggest hooking in a mechanical gauge to verify actual pressure and if it is not 80 psi I would look at changing out the factory gauge.

Feb 01, 2016 | GMC Cars & Trucks

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Has 358000 miles, just had leaks repaired. Twice since my oil pressure gauge reads no pressure but not all the time? Why


1. Oil Pressure Gauge Not Working You will notice this happens when your oil pressure gauge is not reading, whether the engine is turned off, idle or running. Try to step on the gas to rev up the engine. If the oil pressure gauge still doesn't change its reading, your gauge is busted. It's best to replace it as soon as possible because you won't have any idea if your car is already overheating or not.
2. Oil Pressure Gauge Reading Too Low When your engine is idle, the oil pressure gauge will have a low reading. When the engine starts running or when you're already cruising or on the freeway, your gauge's reading should have increased. If it stays on a low reading, then you now your oil pressure gauge is broken.
3. Oil Pressure Gauge Reading Too High Another common oil pressure gauge problem is when your oil pressure gauge is reading too high when your engine is idle or when it's turned off. Rep

Oct 24, 2015 | 2001 GMC Yukon XL

2 Answers

Oil Pressure gauge is all of a sudden reading 80 psi! Was reading about 60 before. No change is the way truck runs. What is happening?


May be blockage in the system caused by either Dirt or heavy build up of carbon in system but more likely the filter is doing its job and his becoming blocked.
Change the oil when it is HOT and the filter and you should be OK

Aug 03, 2015 | 2005 GMC Sierra 2500HD 4WD

1 Answer

Oil pressure gauge goes to 80 and stays


Another gauge needs to be connected to the car to check that oil pressure sensor or the gauge itself is not the problem.

If an independent gauge shows the same readings I would suspect a sticking oil pressure relief valve.

Dec 28, 2012 | 2003 GMC Yukon Denali

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Oil pressure gauge is reading 80 psi. I had the


The oil sending unit is located on the engine block behind the drivers cylinder head area.You have to climb up on the motor to see it cause it is hard to see behind the wiring harness.You may also want to purchase a new sending unit because it is very long and you might need to buy the sending unit socket to replace it.Hope this helps.Good luck.

Jul 20, 2010 | 2003 Chevrolet Silverado 1500

1 Answer

I replaced my oil preesure sensor and my gauge


Your problem may have nothing to do with the sensor but in fact, the pressure relief in the pump may be stuck. Install a mechanical gauge on there temporarily and check the actual pressure. If normal then the gauge wire may be grounded somewhere. If it reads the same as the one on the dash then the relief is stuck (sometimes it can be freed up by draining the oil filter, filling it with marvel oil and re-starting, sometimes takes time though...otherwise you'll need to take care of the pump)

Jan 19, 2010 | 2001 Jeep Grand Cherokee

1 Answer

Oil pressure gauge reads 80 yesterday it ran normal


The higher the oil pressure the better it is, if you had a recent oil change the oil pressure should be high. there is no problem with having high oil pressure.

Oct 14, 2009 | 2003 GMC Sierra 1500

1 Answer

2004 GMC Sierra High Oil Pressure


if it is electrical oil pressure sensor I would start there. The best way to see if you have a major problem is to use a mechanical oil pressure tester. Take off the oil pressure sensor and put the mechanical tester on. The tester should come with a Gage. If it comes within your trucks oil pressure range than all is fine and replace the sending unit and see if that don't help your problem.If the tester runs high then the oil pump is bad or your cam-bearings could be the problem. But with cam-bearings you would usually get a low reading.

Mar 14, 2009 | 2004 GMC Sierra 1500 Crew Cab

1 Answer

Oil pressure gauge reads 80 psi with engine off and pegs running


That is probably a defective oil pressure gauge or a broken oil pressure sender, it reads 80 psi just because that is the maximum value allowed.

Pressure can be verified by reading it with a gauge tool.
If you really have pressure over 70 psi when engine is running then start replacing the oil filter, and check that the oil lines from pump are not obstructed, if there is nothing in there then replace oil pump.

If instead the gauge reads 80 with engine off, that is a defective pressure gauge.

Feb 25, 2009 | 2003 GMC Sierra 1500

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