Question about 2006 GMC Sierra

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My 06 gmc sierra's oil gauge keeps bouncing back and from 0 to 80 and low oil light keeps chiming. Checked oil its fine . Think its just a sending unit

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  • Donald Tucker Apr 03, 2011

    That would be right but I would check the pressure with a handheld gauge to be safe.

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Replace oil sending unit located on driverside rear of engine back of intake this should cure the reading errors

Posted on Apr 03, 2011

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1 Answer

My water temp. gauge keeps bouncing around. I think it's the thermostat. Is it easy to replace, and where is it located? -ROB-


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I have a 2003 gmc sierra 5.3 liter vortec why does my truck leak oil only under pressure


because your oil pressure rises to around 40psi when running and will leak at the weakest place,check your oil sending unit first and seals.






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Oct 20, 2010 | GMC Sierra 1500 Cars & Trucks

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Why is my 94 gmc c1500 low oil pressure.


You may have a bad oil sending unit this is located under the hood near the oil filter two wires are connected to it. i would change this and see if your problem persists, if so you could have an oil pump you wont hear anything until its too late. 20 psi is all you need to keep it alive. good luck

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Oilpressure gauge indicates low to almost no oil pressure


You may want to hook up an external oil pressure gauge
to the engine to ease your mind. This would give you a regular number of the pressure. Compare it to the factory gauge in the dash. Those in dash gauges were not all that precise. If the engine is not having bearing noise I can see nothing to worry about.

Mar 16, 2010 | 1992 GMC Sierra K1500

1 Answer

Gauge problems with fuel and oil


It is just as likely that the fuel level sending unit in the tank is bad as it is that the fuel guage in the dash is bad. The guage is MUCH easier and cheaper to change; try that first.

Feb 13, 2010 | 2002 GMC Sierra 1500

1 Answer

I have a 2000 GMC Sierra extended cab Z71 and my fuel gauge fluctuates.It takes it a while to register it has fuel and then it will just drop to empty then bounce back up. I was wondering what could cause...


The fuel sender is built on to the fuel pump. This happens sometimes if you run the tank low alot Try keeping the truck above 1/2 tank see if this helps otherwise you might need a new fuel pump

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1 Answer

What is oil sending unit on 2006 gmc sierra


if it shows low oil level its possible bad "level sensor "located on oil pan.if it shows low oil pressure possible oil "pressure sensor"

Sep 15, 2009 | 2006 GMC Sierra 1500 2WD

1 Answer

Oil sending unit


CHECK for a switch near ur crankcase

Mar 27, 2009 | 1996 Ford Econoline

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

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