Question about 2002 GMC Sierra C/K1500

1 Answer

Low oil presure on gmc 5.3 manual gauge shows 0 psi at idle 20 psi driveing

Posted by Anonymous on

  • Anonymous Jan 03, 2010

    no the motor sounds fine has 225,000 miles on it I changed to a heavery oil and added two bottles of motor honey with no impovement

×

Ad

1 Answer

Anonymous

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 538 Answers

Oh my!! I'm guessing the "oil pressure relief valve" is stuck open. Does the motor sound OK no knocking or ticking? The "oil pressure relief valve" is built into the oil pump.

Posted on Jan 03, 2010

  • Anonymous Jan 03, 2010

    I think you have oil pump problems.

×

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

3 Answers

Oil light on after engine warm-up on idle


this means a mechanical gauge test is required to check actual pressure warm idling if low below 20 psi then the oil pressure pump relief is stuck open or engine bearing are worn

May 15, 2014 | 2005 Opel Astra 1.4

1 Answer

I just purchased a 2000 GMC Savana 3500 with the 5.7 litter engine with 92000 miles on it. The temp gauge shows that the engine is running between 100 - 160 degrees, seems too cold. The oil pressure gauge...


you probably have your finger on the problem. have oil pressure test .when engine hot minimum 12psi.and change the thermostat.Don't cost much

Sep 16, 2013 | 2000 GMC Savana

1 Answer

Oil pump at idle is good when car is warming up, but after it get real warm after 20 miles of driving the idle oil presure is low about 15 lbs



  • This is normal. On your car, on a cold start the pressure will be around 75 PSI. After the engine warms an oil pressure of 15-20 PSI at idle is just what it should be. The oil pressure gauge should escalate when accelerating up a bit to. If your old school like me 15 PSI mean danger but tat Caddy is just fine.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.


Regards, Tony

Oct 12, 2011 | 2000 Cadillac Catera

2 Answers

What is the correct oil pressure for a chevy 2000 3500 vortex engine


Wild guess of 40 to 60 psi at highest, and more like 10 at idle.

May 22, 2010 | 2000 Chevrolet 3500

2 Answers

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

Apr 16, 2010 | 1994 GMC Sierra

2 Answers

Low oil pressure


If the engine is not making any noise.It is probably the oil sending unit that is defective.If you want to be sure you will have to install a pressure gauge and check the pressure when the vehicle is at normal operating temperature.If it is above 10 psi then replace the sending unit.It is located on the back of the motor on the block by the left cylinder head.You might need a special socket for it.Hope this helps.Good luck.

Jan 12, 2010 | 2004 GMC Yukon

1 Answer

Oil pressure gauge goes up when car started, but then down to 0


u Have a problem with the oil sending unit. The sensor is located beack right side of the engine block. Take out the switch and make sure u have good oil PSI. Should be 6 psi at idle and around 50 at 4000 RPM. If the presure is ok replace the switch they are very cheap about 20 bucks. Please rate.

Aug 10, 2009 | 1998 Jeep Wrangler

2 Answers

Presure oil with my 1998 gmc sierra


20 is minimum pressure I accept in any engine. Have pressure tested with an external mechanical gauge to verify if what you see on the dash is valid. You may have a sending unit that has failed or, a more serious internal engine problem. Have it checked sooner rather than later. If any tapping noise from engine do not drive it.

Jun 12, 2009 | 1998 GMC Sierra

1 Answer

Loose oil pressure when engine slows down


That's normal in most cases, depending how low it goes. 40 psi approx when driving, 20 psi approx when idling ?

Jan 07, 2009 | 2001 GMC Jimmy

Not finding what you are looking for?
Cars & Trucks Logo

840 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

Marvin
Marvin

Level 3 Expert

85239 Answers

Ryan Lutton
Ryan Lutton

Level 3 Expert

1256 Answers

john h

Level 3 Expert

23515 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...