No oil pressure at start up, 2001 Tahoe

[JonnyTahoe]

Thanks for taking a pic of your miles. You may have the most ever seen on here. I was going to replace my sending unit but maybe with 280k 40 psi at start up is ok, it use to be 60 psi.

 

[JonnyTahoe]

What brand of fuel pump did you use ?

 

[Chads93GT]

I assume you were asking me what kind of fuel pump? Whatever the Chevy dealer put in it. I assume its stock, and it still works.

For all the talk about oil, I have always put valvoline high mileage synthetic in with whatever oil filter is on sale.

Its a few thousand shy of 600k miles now. The transmission self destructed around 545k miles. I bought a new rebuilt trans for 1100 and threw it in there. I was wondering if it was a bad financial move but the transmission has 50k miles on it now so I guess not. This thing has been paid off for a long time so I am not really interested in another payment.

 

[Chads93GT]

Still going. Actually has 601,282 now

 

[rook]

Wow. Damn impressive... I'll make note to justify my next used-car purchase to my detractors!!! (I want an Escalade too!)


Sent from my iPhone using Tapatalk

 

[VikingTrad3r]

Yeah. All i can say is thats my kind of family mover. Personally I love driving a 75k suv for 5k and i do most my own little repairs. less than 500$ per year in repairs.

i dont understand why anybody would pi$$ money away on new car depreciation. my car looks and drives new!

 

[JonnyTahoe]

Still going. Actually has 601,282 now

View attachment 68551

 

[JonnyTahoe]

I looked at the picture you took of the underneath of your truck for a while and decided its time to replace my O-ring. When you wrote that you were having pressure issues at start-up but they would improve when the engine warmed up I realized that is exactly what mine is doing. Pictures coming soon.

 

[Searay45db]

No. The tick is still there. Truck still going though. 540k

The ticking lets you know the engine is working All of them do it, lots of articles on how to fix if you really want to.

 

[Searay45db]

I'm going to say a prayer, sleep well, and hope that I find a similar issue. Just bought this, and dang it I never saw that at idle it'll drop down to zero. Goes right back up when I get going, but now I have a new rig and A LOT worried to drive it. 2007 Denali, so I'm hoping 4x4 won't be an impossible task...

Would appreciate any help... Thanks folks-

Two years later....2007 and up have a screen beneath the sensor. Have to remove it and replace it.

 

[rook]

Ended up being the oil pickup grommet failed. About an $8 grommet did all this. Fixed it, I have some other posts...


Sent from my iPhone using Tapatalk

 

[Searay45db]

Ended up being the oil pickup grommet failed. About an $8 grommet did all this. Fixed it, I have some other posts...


Sent from my iPhone using Tapatalk

k, have my fingers crossed. I did see some video's where they unbolted shaft housing from the cv joint, it was enough for the diff to drop without dropping it more. Did you try that? I have had to do this in my other one, the hardest part was putting the diff back up.

 

[rook]

There was another post that said this could be done without dropping the diff. So, probably could be done. I just chose to pull it all down and power through since it was all pretty easy to get to.


Sent from my iPhone using Tapatalk

 

[Yoslick]

Had the same low oil pressure problem at start up and slowly built as it warmed up, pulled the front off and changed the oil pump and o-ring, found the o-ring flattened and cracked so that was probably the culprit but with 219k on the engine a high volume pump was a logical choice since I had it apart, did the water pump and thermostat at the same time. 60# at start up now and 210 on the temp and shes very happy now!!

 

[Searay45db]

Had the same low oil pressure problem at start up and slowly built as it warmed up, pulled the front off and changed the oil pump and o-ring, found the o-ring flattened and cracked so that was probably the culprit but with 219k on the engine a high volume pump was a logical choice since I had it apart, did the water pump and thermostat at the same time. 60# at start up now and 210 on the temp and shes very happy now!!

Why did you go with the HP pump? I read that you do it if your not building up enough oil pressure, is there really any down side? I have the pan off right now. On the 6.0 with electric fans, is it that much more work to do the pump or is it still a ***** to do? Kind of 50/50 on this. Only reason is that the pan is such a pain with diff, although I finally got smart and got a tranny jack.

 

[rook]

You've got to take the front off. I looked at an oil pump too, wish I could have done that at the same time. I was just trying to get the rig back up, given it was my wife's only ride to truck around our kids...


Sent from my iPhone using Tapatalk

 

[Searay45db]

You've got to take the front off. I looked at an oil pump too, wish I could have done that at the same time. I was just trying to get the rig back up, given it was my wife's only ride to truck around our kids...


Sent from my iPhone using Tapatalk

Yeah, I am committed. I dropped the pan last night. The o-ring did not look that bad. Taking the front off.

 

[HiHoeSilver]

You've got to take the front off. I looked at an oil pump too, wish I could have done that at the same time. I was just trying to get the rig back up, given it was my wife's only ride to truck around our kids...


Sent from my iPhone using Tapatalk

Damn kids.

 

[rook]

Kids got things to do! Places to be! Lol


Sent from my iPhone using Tapatalk

 

[Searay45db]

Ok, so I can't get a GM puller, so the Chrysler one will have to do. Since I am removing the starter, thoughts on replacing it? It's the original, do these usually last forever and very reliable?