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2007 GMC Yukon 5.3 Low oil Pressure Fix
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- Опубліковано 17 сер 2024
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This is by far the best video on this problem , I have the same issue , new sending unit, new screen , still a problem even though the oil presssre went up 15 PSI, I think changing the Oil filter is the next thing before dropping the pan for the "O" ring,Thanks you
If that doesn't work, you may need a new oil pump. Installed a new high volume Melling oil pump on mine over a year ago. Went from 16 psi at idle to about 24psi from WideOpenThrottle to rest/stop. Still happy it's been done and renewed all my gaskets along the way. Plenty of tutorials on how to do it otherwise paying a mechanic is $4000 for the job.
If you do the oil pump, replace the cam retaining plate and the oil galley plug barbell on passenger side under timing cover
L99 oil pump melling version and set it up right with feeler gauge
@@shadowopsairman1583isn't the barbell on the rear of the engine? Or is there another one?
Our family had two trucks close to this model year do this same thing within a few weeks of each other. One had about half normal oil pressure and the other went to zero. Both were using Mobil1 oil filters and were approaching oil change time when it occurred. Maybe that was just a coincidence, dont’t know. Just like this video, changing the oil and going back to AC Delco filters fixed both trucks and the problem has not reoccurred since.
Just say no to mobil1
I just did a 5.3 pan gasket job for friend. Did new pick up tune o ring just cause he had it. Used thicker oil also fired truck up 0 oil pressure on gauge low press warning. Runs sounds fine tho.
Guess what tho he got a Mobil - 1 oil filter for it cause it was free. It had acdelco in it. What do u think oil filter ?? Or pick up tube..
Thank you!! It is time for my oil to be changed so I will start there.
Using a quick connect makes life much easier when hooking up a gauge back there
Ford rigs their in dash oil pressure gauges, so long as the engine is above 5 psi, the gauge stays pegged and they never fluctuate... this is fact. I've heard it's to keep down owner complaints, people freak out when pressure drops and the gauge shows it. For Ford's modular engine, it's actually normal for pressure to drop hot at idle down to 20 to 15 psi, it's how the pumps are designed from what I've heard. My 4.6 does it with a manual gauge hooked up and it's perfectly normal. However, on cold starts, it goes up to 80 psi on 5W20, normal running when hot it's 40 to 60 depending on the RPM's.
Yeah 2 wire oil pressure sensor is just a switch, 3 wire is actually oil pressure
I need this guy to fix my vehicle
I feel like 10psi 1000rpm is appropriate and a good baseline but that’s just me
Thanks I fixed 👍my yukon like tu said
great video!!
I have changed my sending unit screen performed the motor medic motor flush changed oil and filter putting the proper acdelco filter back. Ssitting at idle it hold pressure for ever but drive it it gets to full operating temp and then its dives back iut again
Good morning. I looked at your video and I got really curious.
I admire your diag skills. and you have the tools and know how to get around a minor problem
and thank you for the suggestions on how to check for issues and i will keep that in my hat.
You mentioned that changing an oil filter restored your oil pressure reading?
1. Did you cut the old oil filter open to see what happened?
2. What type of oil filter was installed previously?
3. How many miles was on the the oil filter
4. If the old filter was clogged?
5. What was it clogged with?
I have a 03 Silverado. Previous the rebuild. i had 285k
After warming up the oil pressure would drop to 20 psi and i was having lifter ticking noises.
I added snake oil remedies and no avail
SO i pulled the motor and found.
1. THe cam bearings worn out
2. Rocker arms worn out, bearings and trunions worn.
3. Main and rod bearings were normal.
4. Oil pump was normal.
After the rebuild. Oil pressure returned to 40 psi at idle.
I am at 365k and motor is running good.
I’m glad you found it, and yes the filter was just tar type substances, I suspect the customer put some kid snake oil in it, I can’t remember the brand of the old filter, although the oil pressure only went up about 10psi I still suspect some word journals , there’s only so much you can do apart from rebuilding the engine like you, you did the right thing
Thank you for the reply.
I just put stop leak in my express van 2008 and the check engine light just came on and code p0521 and its the low oil pressure sensor, it got a cheap oil filter in it, might have to change it out.
Can you possibly make a video on fixing or finding symptoms to a bad transmissions or solenoid with the shifting ?
I do have a video like that, look on my channel for 2003 Silverado harsh shift , thanks for supporting me by subscribing
curious where you measured the voltage from the oil pressure sending unit. did you simply put the meter in line with the sending unit?
like you vid, BTW. liked how you showed each step and the tools used to check them.
Thanks for supporting me by subscribing.
I put the meter on the oil pressure sending unit signal wire
I changed the oil pump, oil screen, oil pressure sensor and oil filter and still the same problem. But mines is a 03 Tahoe with 5.3
Did you ever change the pick up tube o ring while at the oil pump?
@@windexbottle3537 yes, when I did the oil pump. It comes with it
Did you ever switch out the oil level sensor? On the passenger side on the oil pan?
@@windexbottle3537 that doesn’t have anything to do with oil pressure
Hey there, my 2008 sierra 5.3 at cold start is at roughly 40 psi, when hot/idling it is at about 19-21. It goes up when accelerating but not passed 40 psi. I replaced the oil sensor switch and screen and made no difference! Please help. Thanks
Check the oil pressure at the filter with a manual gage(like in video) & compare it to the gage on the dash, if the manual gage is 10psi or more lower then its probably a split o-ring on your oil pick up tube, if there both low its probably the DOD system, Make sure the engine is at operating temp when testing
My 2011 camaro L99 6.2 now has the (floating) 14-16 psi idle on hot engine 250F and 26 psi when temp is around 225F. Cold idle is 50 Psi. Oil pump and pickup tube are new. No metal signs in the oil filter. I can hear very light crank bearing sound that could be hear Only under the car. Ticking lifters sound (as usual) presents. Could you please advise is it normal ? 115K Mileage 5W30 outside temp 105F
Remove the oil sending unit, fish the screen out of the hole the sending unit come out of, make sure its not clogged, higher oil pressure when hotter indicates some sort of clog
@@jonwillfixit it's clean. So problem is in the high oil temp or in the oil pressure? I have 250F oil temp in "full throttle mode" only. Oil temp usually is 225 230F
No oil cooler?
Has me thinking how long they ran it with low pressure
My 2000 5.3 acts like I changed the oil every time I start it after it sits a few hours, like the pump is loosing prime. I quit driving it till I can fix it. Sound like pump or o ring?
I was already thinking a collapsed oil filter or a sticking oil relief valve
Don't use fram!
@@burt1758 I stopped using Fram about 13 or more years ago and went with Wix Filters
My 2008 gmc yukon denali having a low oil pressure warning. I've changed the pressure sensor, oil pump, oil pressure relief valve, new oil, new filter and clean pickup tube and put a new o ring. Still the engine oil pressure is low 😢
Please advise I'm done.
Maybe cam bearing can be the reason?
There’s many other components that can cause low oil pressure problems in the 5.4
I would do a complete AFM delete
They make kits for this delete
Also check the crank bearings
5.3
Damn my yukon 08 is doing this every yr now after 230k miles on it i might check my oil filter nxt its probably clogged
I have a 07 Tahoe that oil pressure goes down to 20 at stop lights but is that normal? I have 217k on it and o ring on pick up has been replaced but not the oil sending or screen…I use valvoline 5w30 HM synblend with a supertech MP10060 filter…on cold start I get about 40 but goes down under 40 quick even before it’s at operating engine temp
20 is a little low but not to bad , take the oil sending screen out, clean then retest
@@jonwillfixit her oil pressure fluctuates above 20 like 21 or 22 at idle when parked….I did run MMO in her last OCI for 3k hoping it’ll clean out the screen but probably clogged it a lil bit i really don’t know but I’m also using Castrol GTX HM with a ST10060 filter this time and running to 4k or 5k depends
I was worried about a 25 lb hot idle on my 200K 2012 6.2 When I rode in my friends 2012 Silverado with 40K miles brand new condition truck his oil pressure is lower than mine Hot idle
The TSBs that I have read which are written for vehicles that are still under warranty state that a 25 lb hot idle is normal for a healthy motor in the gen4 stuff
@@doddgarger6806 my cousins 08 GMC with only 136k his cold start Dosent even hit 40 and when hot it idles below 20
@@VickyLSavage02 cam bearings wear due to the AFM banging open and closed puts force on the bearings
Best thing is to delete it install something like a l9h cam maybe or another vvt factory cam with ls7 lifters and a new high output pump ie l99 and install correctly plus delete the bypass in the pan, and of course need a tune or diablosport to disable the AFM it's easier than many think
I fix the oil filter and it’s the same thing
That engine doesn't have the plastic shield obstructing access to the sending unit !!! Way easier that way. Did you remove that?
I think it was already missing
Is the oil retuning to the oil sump sludged up engine? Running cold short trips or maintaining engine oil changes
It’s very possible, I didn’t take off the pan
Can someone tell me where the screen is on my 2014 Mustang V6 3.7?
Is this the same for a 2004 Tahoe 5.3
Not exactly, in 2005 GM implemented there AFM (active fuel management) basically it means the engine can switch to a 6 or 4 cylinder mode depending on the speed & load of , in turn saving on fuel economy, the good news is that your 2004 doesn’t have that system therefore taking out that equation, the AFM system is very problematic & most GM enthusiast delete the AFM system all together
@@jonwillfixit so I'm having the same problem. I had a intake leak an the oil gauge was pegged to the 80. I fixed the leak an replace the sensor now the gauge reading low oil pressure but truck runs fine. An did a oil change but I think it's a car quest oil filter on it
Oil filter collapsed , new oilfilter and oil change,cruising speed 1800rpm 40psi, 30 psi at idle, rev engine or accelorate jumps to 60psi
There’s a lot of reasons why the oil pressure can be low, the best way to diagnose the 5.3 is take an oil pressure reading at the oil filter with a manual gage(need adapter there cheap) at the same time look at the oil pressure on gage at cluster , this will split the system in half,top end , low end, if the top is significantly lower than bottom then your issue is in the top end, if there both still low I would concentrate on the bottom end
@@jonwillfixitdoes that also work foe the 6.2L? Im having a low oil pressure issue and ive already replaced the sensor and filter
2007 was the worst year for camshaft bearings causing low oil pressure
What did you use to cut that only sending unit in half?
Pneumatic cutting wheel
@@jonwillfixit Hello, I have a Chevrolet express vortec 6.0 and the oil pressure needle moves erratically, this happens at steady speed on the highway, Leguille moves between 30 and 45 PSI, what can this be from???,
What filter was on it? thanks.
Pf46e acdelco
I’ve got a 2008 Denali and my oil pressure starting getting low on the gauge, but no lights or warnings came on. I started hearing a deep rattling from the engine when I was on the highway and my pressure dropped to a quarter on the gauge.
It scared me to death so I got it home (I was close) and just parked it. I’ve had a slow leak which I plan to get fixed this January, but don’t have the money for that kind of gauge work until then.
I let it sit, checked the oil level, and added a quart. I didn’t really notice any difference in the oil level and the pressure went back up while it was sitting & idling.
The problem is when I’m driving it above 50-60 miles an hour, that’s when the rattling starts and the pressure starts dropping.
Anyone have any idea what’s causing this?
Would appreciate the help.
It sounds like your oil pressure relief valve is opening to early, they make aftermarket bypass kits to solve that problem
@@jonwillfixit Thanks. I’ll definitely look into it. Any recommendations for a website that may sell the kits?
I’ve replaced sending unit (ac delco) , oil pump and oring (green), plugged relief valve in oil pan, and I still have no oil pressure. Warning light keeps coming on. Pressure goes up to 20 on cold start and drops to 0. Mechanical gauge reads the same. Any suggestions.
Connect a manual oil pressure gauge at oil filter port(need adapter there cheap) start engine and monitor the manual gage and oil gage in cluster, if the manual gage is higher then it’s in the top part of the engine, this will at least give you some more data, if it’s 2007 or newer it’s very possible it’s the cylinder deactivation system
@@jonwillfixitwhat is a cylinder deactivation system and how would we tear the piece of crap out!? I’ve changed everything on a 2010 Yukon xl 6.2. Is this part of the AFM system? I’m at wits end, just took everything underneath the engine off to do the oil pan O ring, pan relief valve , oil pump. And this code was great cause I did have a blocked filter. But it’s still low. Thanks cheers Kevin
@@kevinfraser640 Cylinder deactivation is an aftermarket term for what the AFM (active fuel management) we use that term because every manufacture has an acronym for that system which all basically does the same thing, turn off the injectors and ignition & valve operation to those particular cylinders, Google TSB PIP4786C
what oil filter u used on the yukon 5.3
AC Delco pf52e
It’s same for 2008 Chevy Silverado 5.3?
@@mariogarcia-zu2zd yes
Thanks for this one, got me curious and it's 1.5 inches longer than my napa 1040 which is the same one found on a 94 454 cu in. We never could believe that because it's just so small, but they do that just for installation ease at build time. The longer ones are not a problem with road clearance at all. Got some pf52e on the way for my little buick. I actually get to use a REAL filter, still pinching myself.
I've got low oil pressure on the dash but 40 psi on the front mechanical gauge. Any ideas? I was thinking it's an issue with the pressure relief Valve
Its in the top end of the engine
@Hometown Auto Repair what could be replaced on the top engine?
@@TheZeka1996 if you're getting mismatch in gauge reading, it coulbe that the oil filter got clogged. I replaced my filter and it seemed to resolve the issue
@@cpabregowhat filter did you use before and after?
@teddy_awdB19 don't remember brands, but current is napa brand
Sending unit, filter, main bearings that's low oil pressure.
I disagree with the improper oil filter theory. You said the filter was plugged. No filter should ever get plugged before the next scheduled oil change. It sounds to me that the owner/s either didn't change the filter on the last oil change or didn't do the oil change/s on time. The engine is full of gunk and that gunk plugged up the filter. The filter doesn't produce gunk, it catches it. Or it's supposed to, and the aftermarket filter did just that.
If the AC Delco filters aren't getting plugged over the same oil change interval, then they are not catching as much of the gunk and thus, they are not protecting your engine from damage from that gunk. An oil filter that doesn't do its job would explain the trouble GM has with their AFM system with the collapsed lifters. Either that or GM is telling customers to go longer than they should between oil changes. I suggest that you inform customer of this and advise them to use a quality filter that catches much more of the gunk and shorten oil change intervals. Inspect the filter for the amount of gunk in them and I will bet that the amount of gunk will go down with each change as the gunk left behind by the AC Delco filters and/or going too long between oil changes gets cleaned out.
I don’t disagree with your assessment, but the fact remains that the new oil filter brung the oil pressure up 10 psi, I do agree that there’s probably gunk in this engine & the root cause is still yet to be determined
Had the same problem with my 2013 Sierra, replaced Mobil 1 filter & oil fixed it. No problems since
namber pless im dubai you garag in U A E
Your Priceless Need More Like Ya
It ain’t got no gas in it