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My 2005 Yukon Denali 's oil pressure gauge pegged out at 80 then it atarted going from 0-80 the oil level is fine. I think it is a sensor but I am not sure. Weill it hurt to drive it?

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SOURCE: 2006 Yukon Denali, oil pressure gauge malfunction

Most likely the oil pressure sensor is bad. Its located in the very rear of engine on top of bell housing area.

Posted on Oct 30, 2009

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1 Answer

2005 GMC Yukon oil pressure extremely high.


You may have to pull the oil pressure regulator to clean out the relief valve / plunger. Some times it is accessible from the side of the block and with others the pan has to come off as it is a part of the oil pump.

Jan 25, 2014 | Cars & Trucks

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2003 yukon denali oil pressure switch pegged over the 80 psi indicator. Oil qty is good.


Sounds like a bad oil pressure sending unit.

Try unplugging it and see if the gauge drops to zero. If it does than replacing the oil pressure sending unit will most likely fix your problem.

It is not easy to see or get at but you can find it on the back side of the engine on the drivers side, kind of in between the valve cover and the intake plenum

Apr 08, 2013 | 2003 GMC Yukon Denali

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

1 Answer

I have a 2005 GMC Yukon Denali with 88,000 miles on it, when i first purchased the truck earlier in the year, the oil pressure gauge was reading all the way to 80, now when i press on the accelerator the...


Yes, most likely it is a defective oil pressure sending unit. However, oil pressure is something you do not want to take chances with. Have it checked with a manual gauge to determine the problem as soon as possible to avoid possible major engine failure. I hope this helps.

Aug 02, 2011 | 2005 GMC Yukon Xl Denali

1 Answer

2003 yukon xl oil pressure guage is at 80 (top end) When I excellerate the gas pedal the oil pressure guage drops to 0.


Hello: You may have a inaccurate oil pressure sensor, you might try replacing the sensor but you have to remove the intake manifold to access the oil pressure sensor

Jan 21, 2011 | 2005 GMC Yukon

3 Answers

The oil pressure gauge is going directly from 0-80.....as soon as you crank up the vehicle....Its running fine, no lights have come on, running smooth like normal, its just that the gauge in the dashboard...


It sounds like there is a problem with the oil pressure sending circuit. The oil pressure sender changes voltage according to the differences in oil pressure. If it is pegged all the way to the max, there may be a short (or open, depending on the way the circuit is designed). I would take it to a shop and have the oil pressure tested with a mechanical gauge first, just to be sure there isn't a problem with the relief valve on the oil pump. But if the oil pressure gauge isn't working properly, you won't know if there really is a problem with the oil pressure, and that could be catastrophic to the engine.

Feb 24, 2010 | 2003 Chevrolet Tahoe

1 Answer

Oil gauge on 2003 yukon denali vortec 6000 engine is either all the way to 80 or to 0. can it be the sending unit and where is it located?


on these it is above the oil filter housing underneath. the best way to tell is to have a "wet guage" installed to test what the actuall pressure is. if the oil pressure is to spec then the problem more then likely is the motor in the speedomemeter unit itself. they do have a problem with these little motors. all the guages use the same style motors. cheers

Jan 14, 2010 | 2003 GMC Yukon Denali

2 Answers

2006 Yukon Denali, oil pressure gauge malfunction


Most likely the oil pressure sensor is bad. Its located in the very rear of engine on top of bell housing area.

Oct 30, 2009 | 2006 GMC Yukon Denali

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