Followup: 2006 GMC 5.3 - Low Oil Press at start

IHC Red · Jan 13, 2022

I wanted to offer a followup and thank you to the great advice I got on my previous post.

I had the O-ring replaced on the oil pickup tube. It was hard and it broke when he tried to get it out. A cross-section of it looks like an oval. It looks like it should be round.

The truck now has better oil pressure than it has had since I've owned it. They also replaced the valve cover gaskets (which were leaking). It should be good for a while.

Love having a truck, but they're not exactly cheap to own.

Image found with Google...

This post was edited by IHC Red on 01/13/2022 at 07:36 pm.

Janicholson · Jan 13, 2022

Thanks for the heads-up on the outcome. A colleague of mine asked me to help diagnose lifter noise in his 1500 PU. It sure sounded like irregular lifter noise like randomly collapsing lifters. We stopped and I opened the hood. I pulled the dipstick and wiped it off. stabbed it back in, and pulled it out dry as a bone. He had a quart behind the seat. Put it in, dry as a bone. second quart got it to the add mark. With no more oil in the cab, he started it. In 10 seconds the clattering stopped. I suggested he fix the idiot light, and possibly put in a gauge. It took him a week to discuss the issue. He was absolutely sure the truck used no oil. He sold it out of state one week later! Jim

SDE · Jan 13, 2022

Jim, we had 94 Jeep Grand Cherokee. It was a three hour drive to get to the Mayo Clinic in Rochester. When I was almost there I noticed the oil pressure was about 15 and it wasn't holding steady. We stopped at a store and I bought a case of oil. I think I put 4 quarts in. It needed 1 quart every 750 after that. I think the 318 may have needed an intake gasket replaced. It was still under warranty but that was within their spec., so they wouldn't fix it.

Gumbi · Jan 14, 2022

Glad you were able to get this done. Parts are generally really cheap on this generation of pickup, it is the labor that will add up quickly and get you. IMO it is still way cheaper for me to repair my '03 and keep it on the road than to spend 50-60k on a newer truck. Repairs on newer ones are gonna be much more expensive than these older ones.

used red MN · Jan 14, 2022

So SDE you are saying that whoever was building Jeeps at that point ..I think they were owned by Chrysler at that point.. said that a using quart of oil every 750 miles was an acceptable amount? If that would have been mine I would have been rattling some chains at the dealership that sold it and right up the ladder!!!!

Followup: 2006 GMC 5.3 - Low Oil Press at start

IHC Red

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Janicholson

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SDE

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Gumbi

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used red MN

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