OIL COOLER LINES - Check yours now! Urgent 2019 owners

[Jricharc]

So I have a 2019 Silverado and I just noticed my oil cooler lines are dripping a small amount. I have 40k on the truck but an about 3 months out of my 5yr powertrain window. Dealership says they won’t cover replacement. Anyone had any luck outside of your powertrain warranty?

[relevante]

29 minutes ago, Jricharc said:

So I have a 2019 Silverado and I just noticed my oil cooler lines are dripping a small amount. I have 40k on the truck but an about 3 months out of my 5yr powertrain window. Dealership says they won’t cover replacement. Anyone had any luck outside of your powertrain warranty?

Not me. I called GM corporate and they said something like maybe I could get 10 or 20% covered as goodwill but I’d have to take it to get checked out first. I already had a bunch of stuff taken apart so I just did my own modification/repair.

[Jricharc]

4 minutes ago, relevante said:

Not me. I called GM corporate and they said something like maybe I could get 10 or 20% covered as goodwill but I’d have to take it to get checked out first. I already had a bunch of stuff taken apart so I just did my own modification/repair.

Damn, that sucks. Did you replace them or do something else? I’ve seen some use a block off and just eliminate them.

[relevante]

4 minutes ago, Jricharc said:

Damn, that sucks. Did you replace them or do something else? I’ve seen some use a block off and just eliminate them.

I cut and flared the factory lines and used AN fittings and replaced the middle section with braided hose. Some others have just used rubber hose and hose clamps even I think if you dig back in this thread a bit.

[richard wysong]

the problem seems to be with the crimp failing so you can cut the crimp off and use a/c type hose clamps. I don't know if the replacements are any better than the factory, I went through 3 sets of GM replacement lines on my 98 before I got rid of it. Driving the hi-way assistance truck I have seen many Chev Traverse/ GMC Envoy on the side of the road with a trail of oil and a big puddle under them from the lines coming apart

[AJMBLAZER]

https://www.gm-trucks.com/forums/topic/246937-diy-oil-cooler-line-replacement/

[woody stevenson]

my oil cooler lines totally came apart while I was driving,I  have a 2019 Trail Boss 5.3 with only 25k miles on it.  My warranty ran out 3 months before this happened n will not cover anything. I did get the truck to my mechanic , just to make sure  the  motor was good I had him drain the oil cut the oil filter to see if any metal bits  in it, there was, so now I have a motor that might  last a while or not, so I decided not to take a chance and replace the motor. What pisses me  off is GM knew about this problem and had recall or noting, any thoughts are welcomed

[AJMBLAZER]

1 hour ago, woody stevenson said:

my oil cooler lines totally came apart while I was driving,I  have a 2019 Trail Boss 5.3 with only 25k miles on it.  My warranty ran out 3 months before this happened n will not cover anything. I did get the truck to my mechanic , just to make sure  the  motor was good I had him drain the oil cut the oil filter to see if any metal bits  in it, there was, so now I have a motor that might  last a while or not, so I decided not to take a chance and replace the motor. What pisses me  off is GM knew about this problem and had recall or noting, any thoughts are welcomed

https://www.gm-trucks.com/forums/topic/222403-2019-silverado-trailboss-53l-engine-oil-cooler-line-failure/page/24/#comment-2654141

 

A month ago you said it happened in December and you just had the lines replaced and all seemed good.

[Silverado4x4]

8 minutes ago, AJMBLAZER said:

https://www.gm-trucks.com/forums/topic/222403-2019-silverado-trailboss-53l-engine-oil-cooler-line-failure/page/24/#comment-2654141

 

A month ago you said it happened in December and you just had the lines replaced and all seemed good.

Hahaha good catch AJM doesn't add up.

[relevante]

1 hour ago, Silverado4x4 said:

Hahaha good catch AJM doesn't add up.

 

Not so sure about that. Seems reasonable to me that after his last post, he ran the motor a bit, had the oil changed and looked in the filter and found metal.

[woody stevenson]

Just to be clear yes my oil cooler lines did fail back in dec 23 as I stated before, drove the truck for several months cuz the motor did sound good, just for a peace of mine had the oil checked n the had the oil filter checked and yes there was metal bits in the filter, even though the oil pressure seems fine n the cooling system seems good no one knows just how long this motor will last so I ordered a new crate motor

[Harmanadam]

On 3/2/2023 at 10:56 AM, romeactual said:

GMC TSB N192220080

Yup just saw this while researching this issue I now have at my local "trusted mechanic" because it blew up on me just this morning on the highway.  Got a warning "oil level low, turn off engine". I pulled over, popped the hood and engine smoking from oil all over.  Dumped my 8 qrts all over the highway.  Mechanic even took a pic of the oil cooler line busted.  For the entire lines, assembly, etc it's running me about $1400.  I'm sending an email over to GM based on your below details.  Should I call too to put in a case or await the long ass email reply?

Thanks in advance as this is the exact issue I have currently.

[PharmDLee]

This just happened to my 2020 Silverado that I purchased in February of 2020.  Granted I put 130 K miles on my truck already, but like most posts above all 4 connections were leaking on the oil coolant lines.  We recently had negative 28 degrees here in Wisconsin last month and shortly afterwards is when I started noticing the oil spots on the driveway.  When I brought this up to the GM guy, he argued that this was normal maintenance after that many miles. 

 

I am sorry GM, this is a known issue.  Oil Coolant lines are not on the maintenance schedule like a serpentine belt or transmission fluid change.  I have a 2017 Subaru and 2015 Honda Pilot, both are older and have more miles, neither has leaked oil.  Honda and Subaru have it figured out.  Trucks are not suppose to be leaking oil at 6 years of age. IF GM thinks that it is leaking oil is a normal thing after 6 years and 130K miles maybe they should hire some new engineers.   I totally agree with the above statement, this is a design flaw.  It would be nice if GM could own up to that, and fix the issue.

[swathdiver]

On 3/2/2023 at 11:56 AM, romeactual said:

WE NEED THEM TO ACKNOWLEDGE THAT THIS IS HAPPENING TO WAY MORE TRUCKS.

This is a wear item.  After about 5-7 years they start sweating, then weeping then dripping then leaking after 7 to 10 years depending on climate and mileage.  A man ought to inspect his vehicle regularly.

 

This is not new to your 2019, GM has been using this setup since at least 1982 as I had them on my Oldsmobile back then. 

[MaverickZ71]

7 hours ago, swathdiver said:

This is a wear item.  After about 5-7 years they start sweating, then weeping then dripping then leaking after 7 to 10 years depending on climate and mileage.  A man ought to inspect his vehicle regularly.

 

This is not new to your 2019, GM has been using this setup since at least 1982 as I had them on my Oldsmobile back then. 

 

THIS. GM can't build oil cooler or transmission cooler lines worth a damn, since the 1990s. We're on the 4th set on our 09 Silverado. In our experience, they sweat in a year or two, and then immediately proceed to dripping and worse. If you have skid plates, they act as catch pans and help to hide the extent of the leaks. The NAPA ones last longer than the genuine GM parts.