Matt, I had the same issue with my 05. Replaced sensor then replaced oil pickup tube o ring. Runs like a champ.

Change the o ring for the oil pickup tube and clean the tube itself and change the sending unit.

Great video. Might I suggest an entire video on that cool software you were using and how that entire setup works. Im a novice, so I would have watched that whole video for sure.

That happened on our suburban. We replaced the pressure sensor on the back of the engine next to the firewall and it fixed it immediately.

Hey Matt, with 200k + miles the main caps shims maybe worn down but you can also and I highly consider a melling oil pump 10296 high pressure high volume, this work worked great and for my ls engine and still running strong just over 300k. Hope this calls your attention. ✌️

These sending units are junk, I replace mine in my 5.3l Tahoe about every 2 years, it's a pain In the ass to swap out. My oil pressure is great, it ends up being the sending unit every time. Don't forget to put in a new screen too, dirty screen will cause it to fail also.

Hey bud got an 03 Tahoe with 310k miles and she's still going strong. I gave up on AutoZone, O'Reilly's, Advanced Auto many moons ago due to the quality and the reman crap they sell ya. All electrical & mechanical parts I get them new from Napa or the dealer. Only things I get from AZ or O's motor oil, wipers, etc. Your ride has a alot of mileage it can still take I'm a witness with mine! Keep on trucking!

Pickup tube o-ring, I also used a washer to shim my pump bypass on my 06 tahoe, idles at 40 and gets near 75 before the bypass opens up.

I remember my first oil pressure sensor as a GM mechanic 👍🏼

This happend to me when I used a k&n oil filter. I did oil a oil change switched back to fram tough guard and it fixed the problem on my 08 Silverado 4.8

I had low oil pressure in my 07 Silverado last month (20psi at idle). I changed the sending unit with no change. My oil didn't have many miles on it but I don't drive my truck often, so it had been in there for about a year. I changed the oil and my oil pressure is back to normal again.

On GM's always stick with AC Delco oil pressure sending units because yes the aftermarket ones are junk and I've learned that too many times..

Glad that is just the oil pressure sensor and not the engine. I had the same issue with my Dodge Magnum Hemi. I did a spirited pull and the oil pressure light came on and the cars gauge read 0 lbs. checked with my scanner and it was actually at 50psi. Pulled the sensor plug and it was covered in oil. Replaced with a new Mopar part and it’s been good ever since. It scared me for a bit. I didn’t want to have to pull the engine.

I have to change my oil pressure sensor on my 06 Silverado, I ordered the part before I realized how much of pain it was going to be to replace it.

My 6.0L I put in my 85 C10 has had about 20 psi. oil pressure for the past 35k miles. I use rotella t-6 15-40 oil and it helps. Revving my engine doesn't rase the oil pressure. Also a friend of mine said they used to have a screen in the bore that the oil sender screws in but mine was already removed.

Dodged a bullet there buddy! Def get the oem sensor. These LS motors don't like the aftermarket sensors.

Keep the original engine is a future classic

Cheapest fix is just to run a higher weight oil lol. My 02 Escalade had a pretty work out 6.0 in it and with 5-30 in it, it would have like 20psi oil pressure when warm. Switched to 10-40 in the summer and it's pretty consistently 30-40 psi

I use Lucas heavy duty stabilizer in my 2011 5.3 Silverado. Definitely helps make the motors last along time I drive mine hard too 170k going strong. I know people that use it with 300k plus. The high mileage motors do like that stuff lol

Fun Fat if you look at the 2005 Chevy time how brochure you could get factory navigation

Put a new oil pump and pickup tube in. It is not hard. It's a simple fix. While you are in there, you can take the rad out and cam swap if needed. I would do a timing chain. I have a 6.0L 2500 that I blew the motor in because I didn't replace. Pushrods were all bent and I heard clattering.

Bro i enjoy all your videos im also a chevy tahoe z71 2004 a lot of your videos are so helpful for me in from texas living in mexico 🇲🇽✌🏼 God bless you man

Richard Holdener on you tube did a video on Ls motor low oil pressure fix. Its a has to do with the O rings on oil pump pick up tube and stuff! He had the same problem on his chevy truck!

Good videos. You definitely need that sensor socket for earlier LS engines.

If anyone is having a similar issue and replacing this sensor does not fix it, my 07 suburban was reading oil pressure in the 10s so I ran some diesel oil for about 200 miles and it cleared whatever blockage was occurring at the oil pressure sensor.

I have several trucks with the Gen 3 engines (4.8, 6.0, and 2 5.3's) and I take care of my parents 4th gen with a 6.2 and my wife's Camaro with a 6.2. Only the Camaro has not had oil pressure problems at one point. I have had 3 bad sending units, 1 oil pump with a sticky bypass (just replaced it out of safety) and a bad o-ring, and one I did not find any smoking guns just replaced the pump and it was back to normal. Its pretty hard to diagnose the sending unit only unless you can reproduce the problem easily and it might be best to put a manual gauge on the side of the block at the front and when its happening confirm the drop there or not. However, once you pull the connector and see oil you know at least that is bad.

If you replace the o-ring and still have low pressure it can also be the cam retainer plate that has a molded gasket that can go bad. Oil flows from side to side within the gasket so you can get a pretty large leak. There are 2 types of pickup tubes so make sure you use the correct o ring for the type of pick up tube you have. I ordered a billet oil barbell kit that came with a bracket that will allow you to hold down the pick-up tube with 2 bolts instead of one. If your engine is out of the car or your transmission is out the barbell is added security. I did a melling high volume pump on my tahoe and my pressure is a bit over 40 at idle and will climb to 60psi while driving. If I really get on it it will hit 80psi

As soon as I read the description my first instinct was sending unit.

Awesome video. Can’t wait to see how your build look like finished.

Yup. Normal at that mileage. Like another sub said, o ring on the sump pickup tube needs to be changed. Do it, and go another 300k. Ask me how I know

I’ve gone threw 4 ac delco sensors and threw the towel in at the 5th. Truck reads 10 psi for the last 6 years and still running strong

I bet you probably already know this, but this is what I found searching for my low oil pressure issue. The oil pickup in the pan has an o-ring, when that o-ring breaks (not a matter of "if" but a matter of "when"), it's like the engine is trying to drink from a broken straw. I had a silverado (5.3) with 255K when this issue happened, and my current vehicle (2003 Tahoe, 4.8) at 220k miles. Might be something to keep in mind, since your Tahoe has some miles on it.

My old 07 Envoy had the same thing. Changed the sensor. Not too much longer same issue happened. Thought it was the sensor again. Parts guy asked do you have a filter? What filter? Filter for the sensor. Really? Changed the filter and sensor. No troubles since.

My Yukon has about 5 psi at idle and 20 psi around 2000 rpm, but doesn’t make any noise. I have changed the pump, pickup tube, cam retainer plate, tried different oil… no change. Been like this for 3 years now, but she keeps chugging along. Ive decided whenever the 5.3 eventually surrenders, she’s getting a 6.0

Had to do that twice on my 04 ‘burban. First one was a faulty ‘04 sensor and The one I have on right now is an ‘07 sensor Been good ever since

Happened to my suburban, but its been 50k miles and its been fine…. Besides the lifter tik and the knocking

Mine did the exact same thing except it was reading 80 PSI the entire time. It freaked me out at first cause this was right after I did a rebuild on my 2000 Tahoe, but yeah it was just the dumb sensor again.

Thanks matt.needed that info if it ever comes up on my yukon

It’s so funny that you posted this today because my 2013 Tahoe stalled itself on purpose yesterday because it had no oil pressure. Turns out, it had just been burning all of it oil recently. It only had 2 quarts of oil in it and it’s supposed to have 6 quarts… it was a fun day.

Ordered some LsxMatt merch just waiting on the Tahiti merch..,

My 2004 Tahoe rolled over 350,000 miles yesterday on the original engine and transmission only has ever had common maintenance and a fuel pump never even a check engine light

Lost pressure myself have a 08 Silverado 5.3 at 178k changed the oil pressure sensor and installed new melling high pressure and high volume pump. Now have 278k still running like a champ

Had the same problem with a cheap autozone sensor bought one from advanced and it’s fine now

My 05 02 an 08 all have did the same thing. O ring for all. The 08 we put a new pump as well just cuz. Oil pickup tube o ring is a common issue in all these sbc.

Hi Matt also dont forget the camshaft retainer plate if you do the o ring/pull the timing cover when they leak you also lose oil pressure (C R P)

My 2002 tahoe has 45 psi at idle and over 60 going down the road. Yes it has the vortec rattle when you first start it up. All with 301 k

I had a similar problem in my 09 LY5 right after DOD delete. Oil pressure started nose diving. Ended up doing the crappy AC Delco oil filter from Walmart.

I guess the cam will have to wait..

So the HP Tuners MPVI2 dongle is 300 dollars and the software is free. The credits are 50 per with that Tahoe requiring 2 of them. There is a Pro-Link feature that adds different firmware and analog inputs. That is makes it $550 + credits. So not exactly as bad as he was talking about. My source is the HP Tuners website.

My Oil pressure in my 2003 Avalanche was pegged at 80 all the time changed the sensor now it idles at 20, when driving it's at 40 288k miles

Glad it worked out!

Right on! I had to replace mine it was pegged at 80 psi . I replaced mine with a Napa replacement .It lasted a week , they replaced it now works fine. Shoot the engineer who "Let's put it here"

👍👍👍 I wasn’t so lucky mine done the same I believe it was o ring on pickup tube but I put new pump on it wile I was there.

Didn’t watch video yet but you lost pressure at the sending unit. Doubtful the crank driven pump failed. Love the channel keep up the great work.

Hp tuners is $399 with 2 credits for mpvi2

Had same problem with my tahoe... Replaced O ring f pickup tube inside oil pan.

Check the oil pressure sensor filter. 4$ part saves a lot of headache

It has a bad oil pickup tube o-ring. It was hard and your 0-60/50 pulls broke its seal and now it is suckibg air. I have replaced hundreds with this exact problem.

My 01 Silverado has 372,539 miles on it original engine and trans so your Tahoe is just getting warmed up.

New oil pump ,Sending unit ,pickup tube o ring.,check all body grounds

It’s gonna be the o ring on the pick up tube same thing happened to mine

Remember the video where I commented you should change the oil pump pickup tube o-ring when you had the oil pan off? This is the reason why.

Never use parts store electronics, I order that shit from Rockauto, ACDelco or Delphi only.

My blazer with the 4.3 vortec and the same oil pump sits at like 25 at idle after it warms up and It's been like that for almost 3 years with no issues

Autozone..... "Duralast...... Doesntlast" thier own jingle.

Good info. Appreciate the content.

Always buy oem on the sensors.

Pick up tube o ring.

Your really supposed to replace the connector for the oil pressure switch but I have done the same before, I agree tho if you still continue to have oil pressure issues I’d slap a oil pump & pickup tube o-ring

That sensor is so hard to get to! I did mine in my 2001 Tahoe ! Mine was leaking so bad. Never stopped working though!

Pickup tube o ring or Try draining and let b12 chemtool sit in the crank case overnight then drain and put oil in

I had the same problem with Hawkeye (05 Tahoe) the o-ring for the oil tube pickup inside the oil pan. Talk about a pain in the @ss for a 12cent oring

Have the same 2005 just need to replace the oring on the pickup tube usually brings it back up $6 oring

I HATE having to replace that damn sender, worst pissible place for it. Its not like an old 327 with next to nothing to hinder you getting it out. Better place wouls have been down by the P/S pump

Thanks for mentioning HP tuners. I saw your E-fans video and began to look for tuners in my area. Not a big selection in the Los Angeles area. What suggestions do you have for finding a tuner or someone that possibly has a way to flash the ecu? Google search didn't come up with much. Do you have any viewers that do this? possibly in CA or neighboring states that is willing to do side work ecu flashing? Lets start a LsxMatt network!

I have a 03 suburban with low oil pressure and I was getting worried because it was so low with 268,878 miles. I changed the oil pressure switch. And it's in the same range as yours

They sell a oil pressure adapter on Amazon that goes in place of the oil filter. Much easier to get to!! And its like $20

Time for a melling m295!

What Milwaukee driver/wrench are you using at 5:56?

Yeah I changed my sending unit and it helped a bit, but in the end had to change the pick up tube O ring

If you replace the pick up tube o ring please replace the oil pump as well

I replaced mine w/ a pos from Oreilly’s and it failed the same way! Oil leaking through the damn connector! Beware though, I had to replace the actual AC Delco unit 3 x until it finally worked. I’d have the Delco part in, and after a few months it also failed (2x…!) crazy.

My 02 tahoe is still good, it hangs out at 40 psi and clock is reading 170k miles

You ever thought about hydro booster swapping the Tahoe apparently it makes the brakes 100x stronger.

Oil pump pickup tube seal. Happens to everyone since it's retained with only one bolt.

I swear the autozone brand oil pressure sensors go bad so fast had them same issue on my ram when it went bad it was the cheap ass sensor

The one way you know if you have oil pressure is to lifts start making noise you know it doesn’t have any oil pressure if the lifters don’t make a noise you know it’s got at least about 10 pounds oil pressure I had about the same problem

I have a 08 chevy silverado and when i start it on a cold start I only have 20 to 25 psi oil pressure an then I get a lifter noise. But when I drive it about a mile the oil come up too 30 to 35 at idle then runs about 40 to 45 psi cruising at 55 mph. I don't know if it's my oil pump or what. What do you think it is??? The truck has 242,000 miles an I keep changing the oil when the oil life gauge gets too 50%.

Also very common for the oil pickup tube o ring to go bad!

Either O ring on pickup tube, bad sending unit, or spun cam bearing. Most likely the O ring

I noticed mine was a little lower than normal, so I checked the pressure at the filter and it was good. Turned out the filter was plugged and it only had 1,000 miles on the lof.

Replace oring on pick up tube. I had the exact same issue on a burban

I headed straight to thr oil pump still working on it hope its the problem

What should I do if she’s leaking oil under the truck

I did a rebuilt on a 6.0 and have no oil pressure at all has a high pressure oil pump and all oil gallery are plugged rockers ain’t getting oil can someone help

Don’t buy auto zone sending units...I literally had two of them within a year start shorting oil straight through them like a geyser. Could have lost my engine twice i I didn’t catch that I lost oil psi. Ending up buying an OEM from the stealership and wallla no more issues

o ring on the pump boost the oil pressure fix it for me

Haven’t had that problem yet on my 03 z71 5.3 suburban With 300k miles

Put some rod bearings and main bearings in your engine and enjoy many more miles.

#Lsxmatt do what I did with my trailblazer i flushed my oil pan with parts cleaner to clean the oil pickup tube. Then did a double oil change. 3quarts of parts clean is all you need. I let it soak overnight