Still Not Sold On A Catch Can? Check Here...

[TxTruckMan]

I think it's funny that shadetree mechanics think they know more than GM powertrain engineers about their engines. There's ZERO evidence that these engines NEED a catch can, but whatever.

 

I wouldn't worry about warranty problems unless you have engine failure like that guy did. GM (not the dealer) asked for a photo of the engine bay and scans of his tunes before they would authorize the engine work. The dealer probably doesn't care as long as GM pays, but they wouldn't pay, so he's SOL.

 

I've seen several stories similar to this now - if your engine or transmission blows, GM asks for tune history (and now photos I guess). Most other minor work you'll be fine with mods. It's only when they have to receive prior authorization for major repairs that are of concern.

[Nathan79]

Shame on GM.

[07Softail]

The Evidence is what I drain out of the can at every oil change.

 

RT

[aerojar01]

I read a post somewhere from a GM engineer that went thru the science of why catch cans are not needed, etc. Do your research, blowby is normal as there is no way to 100% seal the piston rings...4oz over 5000 miles and. 250 gallons of gas is minimal...

 

Sent from my SAMSUNG-SM-G890A using Tapatalk

[jrob56]

I read a post somewhere from a GM engineer that went thru the science of why catch cans are not needed, etc. Do your research, blowby is normal as there is no way to 100% seal the piston rings...4oz over 5000 miles and. 250 gallons of gas is minimal...

Sent from my SAMSUNG-SM-G890A using Tapatalk

Love to read that but sounds like one of those my cousins brothers uncle said posts. We'll never see it.

[Cowpie]

I think it's funny that shadetree mechanics think they know more than GM powertrain engineers about their engines. There's ZERO evidence that these engines NEED a catch can, but whatever.

 

I wouldn't worry about warranty problems unless you have engine failure like that guy did. GM (not the dealer) asked for a photo of the engine bay and scans of his tunes before they would authorize the engine work. The dealer probably doesn't care as long as GM pays, but they wouldn't pay, so he's SOL.

 

I've seen several stories similar to this now - if your engine or transmission blows, GM asks for tune history (and now photos I guess). Most other minor work you'll be fine with mods. It's only when they have to receive prior authorization for major repairs that are of concern.

 

 

 

Actually, I take a different approach. I find it interesting that the commercial heavy engine OEM's did feel the need for CCV oil filtration, or "catch cans", on their motors. GM is really behind the curve as opposed to in front of it. Vehicle assembly is all about cost as much as quality. If GM can save $1 in vehicle assembly, they can save millions of dollars. A catch can wouldn't even be considered.

 

But all the heavy duty engine OEM's think it is worth it. This a a Cummins ISX. One can see the black hose from the front of the motor going into a box on the side. That is the oil filtration "catch can". The black hose behind that can be seen going on to the intake tube.

 

 

 

And here is a recent pic I took of the catch can setup on my 2015 2500 6.0L. Not nearly as bad as my previous 1500 5.3L, but I feel better not having that glop going to my intake. Not the greatest pic, so it is hard to tell that there is actually about 3 oz of oil and such in the catch can. The first gets the lion's share, and the second gets what the first missed.

 

 

 

Even if one to worry about warranty issues having a catch can on (I don't), it is an easy deal to disconnect and restore to factory before going to dealer. I can have my catch can disconnected and PCV line restored to factory in about a couple of minutes.

Edited May 18, 2016 by Cowpie

[twoheeldrive]

Its a risk you're willing to take then so be it.

 

There was a resolution to the case with the Camaro and the owner lost.

 

 

 

http://www.camaro5.com/forums/showthread.php?t=451361&page=30

I just slogged through that entire thread. GM denied warranty coverage just because they defined a Catch Can as an engine modification. So, GM will use ANY modification as justification to deny warranty coverage. And if that wasn't bad enough, they cancelled the warranty ON THE ENTIRE DRIVETRAIN.

 

This is certainly bad news for CC manufacturers. And it sets a precedent to deny warranty for anyone and everyone who has a CC.

 

Denying warranty for tunes, I understand. Denying warranty for a PCV filter... well I just don't get that. And why kill the warranty on unrelated parts like the transmission and differential?

 

On one hand, GM steps up and buys back entire trucks for vibrations... and on the other hand they cancel a warranty for no good reason. That just doesn't make any sense to me.

 

I am really disappointed in the way GM treated that customer.

 

 

 

 

 

 

 

 

 

 

 

 

I am unhappy with the whole DI

[thearizonacowboy]

 

 

 

Actually, I take a different approach. I find it interesting that the commercial heavy engine OEM's did feel the need for CCV oil filtration, or "catch cans", on their motors. GM is really behind the curve as opposed to in front of it. Vehicle assembly is all about cost as much as quality. If GM can save $1 in vehicle assembly, they can save millions of dollars. A catch can wouldn't even be considered.

 

But all the heavy duty engine OEM's think it is worth it. This a a Cummins ISX. One can see the black hose from the front of the motor going into a box on the side. That is the oil filtration "catch can". The black hose behind that can be seen going on to the intake tube.

 

Cummins ISX.jpg

 

 

And here is a recent pic I took of the catch can setup on my 2015 2500 6.0L. Not nearly as bad as my previous 1500 5.3L, but I feel better not having that glop going to my intake. Not the greatest pic, so it is hard to tell that there is actually about 3 oz of oil and such in the catch can. The first gets the lion's share, and the second gets what the first missed.

 

IMG_4394.jpg

 

 

Even if one to worry about warranty issues having a catch can on (I don't), it is an easy deal to disconnect and restore to factory before going to dealer. I can have my catch can disconnected and PCV line restored to factory in about a couple of minutes.

+100000

 

Good post

[jrob56]

I just slogged through that entire thread. GM denied warranty coverage just because they defined a Catch Can as an engine modification. So, GM will use ANY modification as justification to deny warranty coverage. And if that wasn't bad enough, they cancelled the warranty ON THE ENTIRE DRIVETRAIN.

 

This is certainly bad news for CC manufacturers. And it sets a precedent to deny warranty for anyone and everyone who has a CC.

 

Denying warranty for tunes, I understand. Denying warranty for a PCV filter... well I just don't get that. And why kill the warranty on unrelated parts like the transmission and differential?

 

On one hand, GM steps up and buys back entire trucks for vibrations... and on the other hand they cancel a warranty for no good reason. That just doesn't make any sense to me.

 

I am really disappointed in the way GM treated that customer.

 

 

 

 

 

 

 

 

 

 

 

 

I am unhappy with the whole DI

 

See I dont see it as a precedent, I think this is just a case of a customer being way too nice. This community will stand up just like it was trying to for this guy. In court no way that explanation would stand up. If he had just got a lawyer I think their tune would have changed.

[TxTruckMan]

 

See I dont see it as a precedent, I think this is just a case of a customer being way too nice. This community will stand up just like it was trying to for this guy. In court no way that explanation would stand up. If he had just got a lawyer I think their tune would have changed.

Maybe - but the cost of a lawyer to actually do something would probably be close to the same cost as just replacing the engine. Ideally, he should contact the manufacturer of the CC or SEMA to help with the battle. The problem is that many of these aftermarket companies know that their parts void warranties and are for "off-road" use only, so they won't help. Read the fine print.

[j-ten-ner]

GM will give a warranty for the truck (car) as it ls leaving the assembly line.

Why wouldn't they deny a warranty claim, if there were modification done by the owner?
I would.

I could see a point when GM is blaming a LED tail light for an engine failure.
But messing in any way with the emission control / crankcase ventilation?

Why are you guys so confident that GM is in the wrong with the denial of the warranty?

 

so long

j-ten-ner

Edited May 19, 2016 by j-ten-ner

[jrob56]

GM will give a warranty for the truck (car) as it ls leaving the assembly line.

Why wouldn't they deny a warranty claim, if there were modification done by the owner?

I would.

I could see a point when GM is blaming a LED tail light for an engine failure.

But messing in any way with the emission control / crankcase ventilation?

Why are you guys so confident that GM is in the wrong with the denial of the warranty?

 

 

so long

j-ten-ner

Because there is no way at all that a catch can can cause an oil pump to fail. They denied it before a full tear down with no real explanation besides vaguely saying a catch can can in some circumstances starve the engine of oil. No no it can't. Also the dealer drove the car after it was towed in for an oil pressure issue and there is a tsb out for oil pump failure on that engine. That alone is cause for GM to fix it. Edited May 19, 2016 by jrob56

[RyanbabZ71]

I read a post somewhere from a GM engineer that went thru the science of why catch cans are not needed, etc. Do your research, blowby is normal as there is no way to 100% seal the piston rings...4oz over 5000 miles and. 250 gallons of gas is minimal...

 

Sent from my SAMSUNG-SM-G890A using Tapatalk

But those same engineers offer a catch can on the camaro 1LE models

[j-ten-ner]

Because there is no way at all that a catch can can cause an oil pump to fail. They denied it before a full tear down with no real explanation besides vaguely saying a catch can can in some circumstances starve the engine of oil. No no it can't. Also the dealer drove the car after it was towed in for an oil pressure issue and there is a tsb out for oil pump failure on that engine. That alone is cause for GM to fix it.

 

I don't know if a catch-can could be the reason, for the engine to starve oil.

 

And in my opinion, it doesn't matter. It is an "unauthorized" modification, obviously.

Where does it start and where does it end?

I don't wanna fight over this.

I just don't understand why GM should be held responsible, for damages on an engine with modifications. No matter what it is.

Because they give a warranty "as is", so to speak.

 

so long

j-ten-ner

Edited May 19, 2016 by j-ten-ner

[Cowpie]

The solutions is so simple, probably why many don't think of it. If there is a inherent risk that a dealer will dispute a catch can thing and deny warranty, then just disconnect the can before going to dealer! I can disconnect my catch can and have the motor back in OEM specs for the PCV line within a couple of minutes. A catch can is effective, can be installed very easily, and can be disconnected at a moments notice. Mine, all I need is a simple screwdriver and I can have the motor back to original. Same when it comes out of the dealer. A couple of minutes and it is all hooked up again. I never feel the need to do it, as my vehicles never see the dealer again after I buy them unless it is a warranty issue or a recall item.

Edited May 19, 2016 by Cowpie