Question about 1998 GMC Jimmy

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Low oil pressure when engine heat up 1998 gmc jimmy

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Replace oil pump

Posted on May 28, 2011

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I have a 2001 GMC Jimmy SLE 4WD. The oil pressure guage is running at 45 or 50 then drops to about 20. The engine is pecking like it isn't getting oil or its very low on oil but I have just changed it. Is...


disregard the oil pump and pick-up because if there were problems there you would not have oil pressure at all
explain the term "pecking" and when it is occurring. Under acceleration ,at idle , driving normal, at speed.

Jan 25, 2015 | 2001 GMC Jimmy

1 Answer

How do i remove oil pan for 1998 gmc jimmy 4.3?


You will need an engine lift remove engine mount bolts lift engine high enough to remove pan,or remove transmission

Aug 31, 2014 | 1998 GMC Jimmy

1 Answer

Very low oil pressure on the 4.3 2000 GMC jimmy reads 20 and check gagues ligh flickers on and off. Loud tappet noise fro m engine.


Low oil....? Clogged oil filter?..........Overheated it lately?.......If so replace oil and filter......Really bad things are: Spun a bearing or two? Clogged oil sump or bad pump.....broken block or webs. don-ohio

Sep 10, 2011 | GMC Jimmy Cars & Trucks

2 Answers

I have a 4WD 1998 GMC Jimmy 4.3L Vortec V6 and it started running hot then it shut off and wouldn't start back up... do you think there would be any way to fix without replacing the whole engine


IS THEIR WATER IN THE OIL? CHECK THE PLUGS TO SEE IF THEIR WET.YOU MIGHT PUT SOME PLUGS IN IT IF WET TO SEE IF IT WILL RUN.THEN PUT SOME HEADGASKETS ON IT.BUT IN REALITY NEW MOTOR WOULD BE BEST.

Aug 26, 2011 | 1998 GMC Jimmy

1 Answer

1995 GMC Jimmy 3.5L HO - lots of engine clatter, very low oil pressure - 10-30 on dash gauge from idle to 3000 rpm, oil full. Oil pump problem or major repair??


if the noise is coming from the oil pan you may have bad rod bearings or main bearings or the oil pick up tube could have also came loose but since you have oil pressure im gonna say your looking at replacing or rebuilding the engine witch is a major repair.

Jan 19, 2011 | 1995 GMC Jimmy

1 Answer

1998 gmc jimmy 4.3 vortec starts and runs but shuts down when reaching operating temperature.


Your fuel filter may be at it's life time and will need to be replaced. Start with the simple and replace that, the other thing also that would cause the engine to shut down would be a faulty oil pressure sending unit. What is the oil pressure on the dash when the engine shuts down. You need at least 8 PSI to have the engine stay running. Check your Fuel pressure at the shredder valve and you should be 62-65 PSI with the engine not running and fuel system energized, once the engine is running it should drop about 5PSI. The last thing that could cause this would be a bad ICM, once the ignition system heats up the ICM fails and the engine shuts down. A mentioned, start with the simple and replace the fuel filter and check your fuel pressure to ensure your fuel Sending unit has not gone bad and will need to be replaced. Good luck and keep me posted.

Jan 28, 2010 | 1998 GMC Jimmy

1 Answer

My 1996 GMC jimmy wants to stall when I come to a stop. The RPM gage goes up & down then drops below 1000 RPMS and stalls.


I would go down to your local auto parts store and do an alternator and battery test. It sounds like at low rpms you are loosing volts. When you apply the brakes you would be supprised how much power from the engine it takes. You could also be loosing oil pressure. Check your oil level. When your engine drops low rpm, the oil pressure drops and shuts down the engine.

Jan 09, 2010 | 1996 GMC Jimmy

1 Answer

I was on my way home and my check engine light came on then i seen that my oil pressure was low i pulled over and there was a fast leak from the driver side of the motor took 2 5l jugs to get home


Check the obvious things first, are you low on water? are you low on oil? are you over heating, if these all check out then you probably have a defective censor somewhere. emission censors can do this also. Oil sending unit, water temp censor, etc.

Dec 17, 2009 | 1992 GMC Jimmy

1 Answer

I keep losing oil pressure 2000 jimmy


I do not know your model of vehicle. But low oil pressure is usually an oil pump problem. If it is not sorted out soon, you will need another engine.

Dec 20, 2008 | 2000 GMC Jimmy

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