No oil pressure again

[1KillerSS]

I seriously doubt this is an oil pump issue, unless the OP replaced his old one with the same part numbered one from GM again.

[Scott@Bjorn3D]

Originally Posted by 1KillerSS

I seriously doubt this is an oil pump issue, unless the OP replaced his old one with the same part numbered one from GM again.

GM never changed the pump design so they put the same part number of pump in as the original.

[rebelyell22]

Hope mine doesn't fail. It's like Russian roulette every time I crank my car.

[qcman]

I thought this oil pump failure was from debris caused by machining of the block not a bad pump specifically? If so you would think it should be cleaner in there when the replacement goes in?

[1KillerSS]

Originally Posted by Scott@Bjorn3D

GM never changed the pump design so they put the same part number of pump in as the original.

So you put the same kind of oil pump back in? Why not upgrade while you were there?

[Scott@Bjorn3D]

Originally Posted by 1KillerSS

So you put the same kind of oil pump back in? Why not upgrade while you were there?

Still under warranty, putting different pump in voids the drivetrain warranty. Plus then GM would not of paid for the labor when the pump failed the first time.

[Elite Engineering]

GM will replace the failed pump with the exact same one. For those that build engines, they can confirm most of this is from the lack of proper de-burring the pump during assembly from the supplier of them. Rare to see a Melling or a OEM pump that has been blueprinted have the bypass valve stick and a subsequent failure. This is for ALL LS based GM vehicles, truck versions, Corvettes, etc. And no, a proper catchcan system is impossible to be related to an issue like this that has been a problem with the LS engine since 1997 when the first LS1 was released.

[Scott@Bjorn3D]

Originally Posted by Elite Engineering

GM will replace the failed pump with the exact same one. For those that build engines, they can confirm most of this is from the lack of proper de-burring the pump during assembly from the supplier of them. Rare to see a Melling or a OEM pump that has been blueprinted have the bypass valve stick and a subsequent failure. This is for ALL LS based GM vehicles, truck versions, Corvettes, etc. And no, a proper catchcan system is impossible to be related to an issue like this that has been a problem with the LS engine since 1997 when the first LS1 was released.

So do the new LT1 and LT4 use the same pumps? Probably.

[camguynj]

Originally Posted by Scott@Bjorn3D

Well last night hopped in the car and pulling out into the street, ding ding ding No Oil Pressure. WTF, they just put in a new pump like 4 months ago. So turn off the car, and then try to start it again. Still no oil pressure. Turn it off and let it sit blocking the road. I had to at least get it out of the road so I start it up again and now oil pressure. So I get it out of the road and back it into the garage in case they have to flatbed it in the morning.

So this morning start it and it has oil pressure. Take it to dealer and after sitting there all day they tell me car is fine. They changed the oil and found no metal in the oil. They also cut open the GM oil filter and found no metal. The best thing they did notice was the check valve in the filter was off center and they think it may of gotten stuck.

I am really getting scared driving this car.

Why did you get a new pump installed 4 mos go?

[JerTM]

Originally Posted by Elite Engineering

GM will replace the failed pump with the exact same one. For those that build engines, they can confirm most of this is from the lack of proper de-burring the pump during assembly from the supplier of them. Rare to see a Melling or a OEM pump that has been blueprinted have the bypass valve stick and a subsequent failure. This is for ALL LS based GM vehicles, truck versions, Corvettes, etc. And no, a proper catchcan system is impossible to be related to an issue like this that has been a problem with the LS engine since 1997 when the first LS1 was released.

Take it easy, nobody is blaming your product. Touchy?

[Scott@Bjorn3D]

Originally Posted by camguynj

Why did you get a new pump installed 4 mos go?

No oil pressure

[insanity213]

The oil pump in my LS3 failed this past weekend with 9800 miles on the clock. I don't even want the wahoos at GM working on this car after what they did last time nor do I want another one of their junk pumps. Hauled my car to a very competent LS guy about 150 miles away for a melling pump, cam, springs, rods and long tubes.

I've been a GM guy all my life, but they've gotten shady with warranties and just issuing TSB's where there should be recalls in recent years. :(

[SSMY1LE]

Something everyone should take notice of......

The new AC Delco oil filters (have the letter "E" after the numbers) have plastic in them now holding the paper element in place. They used to be all metal inside.
Someone I know well (also a Camaro 1LE guy) has a scrap peice of metal LS motor in his shop right now because of it.
The plastic piece in the filter broke and the paper was sucked into the oil pump. Metal was used to hold the paper in place before.
Needless to say what happened next. He is presently in a battle with GM over "their" oil filter.

Here is a picture of the inside of an older "non-E" filter:


Here is the inside of the "NEW" filter with the letter E in the number:

[68rssscamaro]

Originally Posted by SSMY1LE

Something everyone should take notice of......

The new AC Delco oil filters (have the letter "E" after the numbers) have plastic in them now holding the paper element in place. They used to be all metal inside.
Someone I know well (also a Camaro 1LE guy) has a scrap peice of metal LS motor in his shop right now because of it.
The plastic piece in the filter broke and the paper was sucked into the oil pump. Metal was used to hold the paper in place before.
Needless to say what happened next. He is presently in a battle with GM over "their" oil filter.

That is interesting and the first I have heard. Good to know.