Question about 1998 GMC Sierra

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2005 gmc sierra low oil pressure - 1998 GMC Sierra

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 394 Answers

SOURCE: 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.

Posted on Mar 16, 2010

Testimonial: "Thank you. Your suggestion was helpful in helping me focus on the solution rather than the problem."

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  • 47 Answers

SOURCE: low oil when engine warms up gmc sierra 1995

30-40 psi of oil pressure is fine for many vehicles including your GMC. I am assuming that the truck has more than 100,000 miles on it and still has the original engine in it. By rule of thumb you only need 10 psi per 1000 rpms in a typical street driven engine to give adequate oil pressure to keep the bearings from oil starvation. The oil pressure is typically higher when initial start up occurs because it is more viscous due to the temperature of the oil as the engines oil warms up the visconsity thins out and the oil flows more smoothly. The drop in oil pressure is a normal occurance. Above 45 is more than required for a daily driven street engine. I believe that the specs on that engine only list 30- 45 psi.

Posted on Dec 07, 2008

seanpwright
  • 2030 Answers

SOURCE: 1990 GMC Sierra lifters knocking. Oil pressure

I doubt it....It could be a totally worn out engine.

Posted on Nov 13, 2009

fixitriteman
  • 431 Answers

SOURCE: LOW OIL PRESSURE ON 2007 GMC SIERRA 1500. CHANGED

have it tested using a manual gage if still low then main baring ore most likely bad that would mean a over hall if is really low and bearings bad should be making rattle noise when started up first few seconds

Posted on Mar 11, 2010

Testimonial: "thanks alot.truck is not making a rattling noise.we did check it with a manual gauge.it read about 10 at idol. press. gets better as you incr speed"

csmock132
  • 4669 Answers

SOURCE: why is my 94 gmc c1500 low oil pressure.

The first thing you should do is replace the oil filter. If that doesn't work I would hook a mechanical gauge to the engine. If the mechanical gauge reads the same as the gauge did on the dash, replace the oil pump

Posted on Apr 16, 2010

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1 Answer

On my 2004 gmc Sierra dually it reads low oil pressure when I press the brakes. Once I release them the buzzer goes off


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My 2001 GMC Sierra is running at a low idle and the oil pressure gage flickers back and forth


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Hi...2008 gmc sierra crew...check engine light came on thought maybe was standard just before hitting 30,000 then noticed low oil pressure ( 20 ) then noticed clacking noise?


Sounds like an oil pressure problem. The clacking sound is most likely the lifters are collapsing due to loss of oil pressure. You may have a failing oil pump.

May 08, 2010 | 2008 GMC Sierra 1500

2 Answers

LOW OIL PRESSURE ON 2007 GMC SIERRA 1500. CHANGED


have it tested using a manual gage if still low then main baring ore most likely bad that would mean a over hall if is really low and bearings bad should be making rattle noise when started up first few seconds

Mar 11, 2010 | GMC Sierra 1500 Cars & Trucks

1 Answer

1990 GMC Sierra lifters knocking. Oil pressure


I doubt it....It could be a totally worn out engine.

Nov 13, 2009 | 1990 GMC Sierra

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"

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1 Answer

Low oil pressure and motor is noisy


Your bearings or journals on your camshaft or crankshaft could be wor, bad oil pump, restrictions in the pickup tube/screen, or some other type of restriction in the lubrucation system

Jun 11, 2009 | 2005 GMC Sierra

1 Answer

Low oil when engine warms up gmc sierra 1995


30-40 psi of oil pressure is fine for many vehicles including your GMC. I am assuming that the truck has more than 100,000 miles on it and still has the original engine in it. By rule of thumb you only need 10 psi per 1000 rpms in a typical street driven engine to give adequate oil pressure to keep the bearings from oil starvation. The oil pressure is typically higher when initial start up occurs because it is more viscous due to the temperature of the oil as the engines oil warms up the visconsity thins out and the oil flows more smoothly. The drop in oil pressure is a normal occurance. Above 45 is more than required for a daily driven street engine. I believe that the specs on that engine only list 30- 45 psi.

Dec 07, 2008 | 1998 GMC Sierra

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