Can i run my 2005 Yukon 5.3l with 8 quarts of oil in it

[cuttingedge]

Hi. Will it harm my 2005 5.3l Yukon to run with 8 quarts of oil in it. The shop just supposedly changed my pickup tube o-ring and either they didn't actually do it or they messed up the seal during installation. I am willing to bet the pump is losing prime. When the truck is turned off. I can't afford to sink more money into right now and it's too damn cold for me to work on it in the driveway.

 

[B-train]

Is you oil pressure low with 6 quarts? I wouldn't put in 2 extra quarts due to the foaming possibility of the crankshaft spinning.

 

[cuttingedge]

Is you oil pressure low with 6 quarts? I wouldn't put in 2 extra quarts due to the foaming possibility of the crankshaft spinning.

My oil pressure is zero with 6 quarts. Before putting it in the shop it was zero. I did the test where you add 2 quarts of oil and jacked the back end of the truck up and oil pressure was normal, indicating a bad pickup tube o-ring.

The shop did rhe work and said it was ready. Picked it up after hours and zero pressure at startup. Hit the throttle once pressure went to normal, but it was parked nose downhill. This morning on less of a decline zero period.

 

[strutaeng]

Darn.

Where's the old pickup tube o-ring? Seems like the shop would have saved that or at least taken a picture for you.

At this point, do anything you have to, to get oil pressure back up. Whatever the consequences of running it with 2 extra quarts of oil, that can't possibly be worse than running it with zero oil pressure!

That Russian Garage 54 YT channel did an experiment on overfilling an engine with a see-thru oil pan. He ran it until it literally started spewing oil through the PCV. In spite of that, no real harm to the engine.

 

[OR VietVet]

So, did you take the truck back to the shop?

 

[Fless]

Here's the somewhat duplicate thread.

2005 Yukon 5.3 oil pressure issues. Please read, I need your help

Hi. About 3 weeks ago I drove my Yukon to the Vets office. When I started it up, it read zero oil pressure. Stabbed the throttle and pressure went to normal. Thought the oil sending unit might be faulty and replaced with ACDelco part. Same issue occurred. After some research, I added 2 quarts of...

www.tahoeyukonforum.com

 

[cuttingedge]

Here's the somewhat duplicate thread.

2005 Yukon 5.3 oil pressure issues. Please read, I need your help

Hi. About 3 weeks ago I drove my Yukon to the Vets office. When I started it up, it read zero oil pressure. Stabbed the throttle and pressure went to normal. Thought the oil sending unit might be faulty and replaced with ACDelco part. Same issue occurred. After some research, I added 2 quarts of...

www.tahoeyukonforum.com

This is My thread also. At this point I'm trying to build a case that they screwed up, and I think they have.

 

[cuttingedge]

Here is more info. I hired them to change the oring in the pickup tube. Before doing this it had zero oil pressure with a new ACDelco oil pressure sensor. It was full at 6 quarts and no oil pressure at startup. At the recommendation of a mechanic, I added 2 quarts of oil and jacked the rear of the vehicle up. It instantly had normal oil pressure.

This morning I called the shop that fixed it. They say it had pressure when they finished it, but 30 minutes later the first time I started it zero oil pressure with alarms included. Hit the gas, pressure came up, drove it just over 2 miles home. Cold start this morning zero pressure even when I hit the gas. Gently turned the truck around so the front end would be downhill slightly. Turned it off, let it sit for a bit, start it up zero pressure. I should note the oil level was full on the dipstick. I added one quart of oil and started the truck, and it immediately went to nearly 50psi at cold idle. 6 quarts. Zero. 7 quarts over 50psi.

All this being noted, I can reach no other conclusion but that the shop either did not change the o-ring, used the wrong o-ring, damaged the o-ring during installation, or didn't tighten the bolt that secures the pickup tube and seal to the pump. In other words, they are at fault, but are telling me I'm phucked and just out my money.

 

[cuttingedge]

So, did you take the truck back to the shop?

I called them and they are putting it all in my lap.

 

[ZeroHour]

What state are you in? Is it 2wd or 4wd?

 

[OR VietVet]

I called them and they are putting it all in my lap.

What is their reasoning for doing that? Did they even offer to reinspect their work, as they should have? Tell us you did not call them and accuse them right off the bat? If you reason with them and give them the info you post here, they should want to at least reinspect.

 

[PPV_2018]

“You guys did shoddy work”
“Yeah we might have screwed it up but we’ve already got your money.. siyanara suckaaa”


If it was zero pressure at startup why did you even take the truck? I would have demanded an explanation before moving it one inch.

 

[Fless]

This is My thread also. At this point I'm trying to build a case that they screwed up, and I think they have.

My unstated point was that it is usually more efficient to keep the info in one thread instead of replicating info in multiple places. This keeps the responses on point and in one place instead of having members' answers in different threads.

 

[strutaeng]

Agreed with everyone here. The shop added oil after the work and one of the things any reasonable mechanical would do is check for oil pressure.

Why that wasn't done and delivered the vehicle back to the customer w/o mentioning anything, is beyond me?

 

[cuttingedge]

What state are you in? Is it 2wd or 4wd?

AWD. Colorado

 

[cuttingedge]

My unstated point was that it is usually more efficient to keep the info in one thread instead of replicating info in multiple places. This keeps the responses on point and in one place instead of having members' answers in different threads.

I suppose you're right, but it was 2 different questions and I needed the info as quickly as possible, that being the reason for this post.

 

[OR VietVet]

I suppose you're right, but it was 2 different questions and I needed the info as quickly as possible, that being the reason for this post.

You'll find that most of us can handle numerous questions in one thread post.

 

[cuttingedge]

The owner of the shop is telling me he bets it is the stepper motor in the gauge. I can replace that to eliminate it as a possibility.

Just tell me this. With 7 quarts of oil in the truck, I can point the nose downhill and it immediately has proper oil pressure at startup. If I just point it uphill, it will have zero oil pressure. I can do this numerous times and the results are the same.

What can cause this? My other mechanic I have been discussing this with says the pickup tube seal is the only thing that can cause this. I mean it ain't complicated. There is the pump inlet. O-ring, and pickup tube. There was zero sludge in the pan, and almost zero carbon build up of any kind.

If the bypass valve was stuck, just changing the angle of the truck wouldn't do anything, it would still be stuck.

 

[OR VietVet]

Without attaching a mechanical gauge, you can attach a live data scanner and get a voltage reading related to the oil pressure.

By the way, the info you just shared of what the owner said about a possible stepper motor problem, did you have that info when you initially posted about this problem after picking up the truck? Or is this stepper motor/shop owner info something you JUST now found out?

 

[swathdiver]

Hi. Will it harm my 2005 5.3l Yukon to run with 8 quarts of oil in it.

Not in the least. We had a guy on here a few years back who ran his truck this way for about two years before he could make the repair. Didn't hurt a thing.