Jump to content

AFM/DFM Class action suit...finally

putz173
 Share

Recommended Posts

shakenfake Senior Enthusiast

shakenfake

Posted
Posted
13 hours ago, voided3 said:

Makes sense, losing oil pressure never is a good thing and I can't stand auto start/stop. I've always manually disabled auto start/stop on our truck from day one and the lifters still prematurely failed at 585 miles (though primarily due to manufacturing defect). Prior to 2019, the 5.3 and 6.2 didn't have auto start/stop, either, and that generation also runs into lifter failures after a few years of normal use.

 

We also have a Mini Countryman with auto start/stop and mercifully on that car when you turn it off, it stays off for good for every subsequent ignition cycle. It has a little 1.5 liter 3-cylinder turbo and I can only imagine what favors losing oil pressure at every red light does for the turbo, hence why I disable it on that car, too.

You are over worrying. 100k+ miles on an Audi A6 2.0L turbo diesel. Auto stop and start rarely gets turned off. I even had it tuned. Breathe.

  • Like 1
haider320 Enthusiast

haider320

Posted
Posted
On 1/5/2022 at 3:22 PM, Silverado4x4 said:

I was reading online today that this guy was a GM mechanic an GM is now saying the lifter failure may be the cause of the auto/start stop system that when the motor stops oil is going back into the crank and on restart the oil has to pumped back up again for lubrication. Don't ask where I found it because I know ill never be able to find the page again, kind of make some since. Without the chip it also disables DFM along with start/stop. :dunno:

I don't have DFM but still have start/stop.

Z45 Senior Enthusiast

Z45

Posted
Posted
On 1/5/2022 at 3:21 PM, WeGone said:

What does DFM have to do with emissions? It is for fuel mileage improvements.

 

If this statement were true they would not be able to sell new trucks without the chip to run it as it is disabled and from my understanding will never be re-enabled on these trucks.

Less fuel used = less emissions generated.  The reason they will not-re-enable is likely the cost to do so.

YZ-Dave Enthusiast

YZ-Dave

Posted
Posted

Well even if a CALS goes forward and gets rewarded, you might see what, $100 - and you will still have a set of the same questionable lifters in your engine. If they did have to pay out, once they do, they are 100% off the hook.

The reality is that what, 98% or more of these engines are going down the road just fine with no problem at all, and will hit 200k miles. The thing has a higher probability of being backed over at your local home improvement store by a dump truck and being totaled.

GM has been dealing with the issue on these lifters for a LONG time, going back to the LS engine. The problem lies in inconsistent material problems in the metal itself and is highly inconsistent, and is impossible to know which and what lifters will fail. 

Should they update it - yes. But if they do that now, GM will be replacing millions of lifters in engines that won't need it. It is literally a better logistic solution for them to let them fail in the field.

See the way this whole thing works with the CALS is GM will lay in the weeds, let them form their case, and will have the data to justify their decisions. There was a lawsuit being filed for Camaro, CTS, Corvette owners over starter motors going bad. Once things came out that nearly half the people on the lawsuit had modified their cars in some way, the whole thing got thrown out in court. Change the topic to the lifters - and GM can start asking for proof that all these engines had been run / serviced on time, with Dexos approved fluids, etc..... the same thing will happen. The CALS is only a good idea for the lawyers as they are the only ones who are guaranteed anything if there is a payout.



 

voided3 Enthusiast

voided3

Posted
Posted
1 hour ago, YZ-Dave said:

Should they update it - yes. But if they do that now, GM will be replacing millions of lifters in engines that won't need it. It is literally a better logistic solution for them to let them fail in the field.

 

I agree, and this is the most likely outcome. I think the best outcome would be to give all customers extended coverage on the affected engines so at least if they break down, they know it won't be out of pocket. When they fail, they should have an upgraded full set of lifters installed under that coverage (as opposed to using the exact same design, or at least use the same part but built with more robust materials and tighter tolerances). 

WeGone Enthusiast

WeGone

Posted
Posted (edited)
On 1/5/2022 at 3:21 PM, WeGone said:

"Completely agree, but they'll probably never deactivate DFM on existing vehicles as that's tampering with emissions control systems."

 

 

5 hours ago, elcamino said:

Less fuel used = less emissions generated.  The reason they will not-re-enable is likely the cost to do so.

 I agree but my comment was in regards to the statement at the top about removing or tampering with DFM ! 

I have never seen anything relating to or stating disabling/deactivating DFM was tampering with emissions, if it was the sellers of said disabling devices would have to disclose this to the buyer.

Edited by WeGone
diyer2 Senior Enthusiast

diyer2

Posted
Posted

I think whatever happens will be in GM's favor, meaning the least cost. There are other mass produced products with design flaws that get a band-aide applied and I wouldn't count on it being favorable to the consumer. I say again, do you remember the Ford Pinto gas tank flaw. They killed people IMO and got away with minimal cost. 

shanemoon Enthusiast

shanemoon

Posted
Posted

All of this is overblown. Remember, anyone can sue anyone in the US for anything...and claim anything in their lawsuit. I can sue GM for my car turning into a rainbow elephant at night and haunting me in my sleep, and if I get enough people to agree with me, I can even make it a class action lawsuit. Doesn't mean it'll ever get anywhere. 9 out of 10 class action lawsuits end up vanishing.

 

Also remember that GM has sold somewhere in the realm of 2.8 million of these trucks, with probably at least half being 5.3 V8 w/DFM. Based on numbers on this forum and just extrapolating that, I'd wager that there's maybe 1000-3000 engines that have this issues? That's somewhere in the realm of 0.1% - 0.3% of total vehicles sold with this engine....

 

EVERY manufacturer has issues during manufacturing. Bad batch of parts from a supplier, issue with a line process, assembly error, etc.

If you have the issue, you just happened to get unlucky. Get the warranty service and go about your life.

 

It's hilarious when people say stuff like "Oh I'll never own a GM again or GM is so trash, blah blah blah blah" based on such tiny numbers. Have fun with Ford and Ram's plethora of their own issues.

  • Like 5
  • 2 years later...
Bikerjon Enthusiast

Bikerjon

Posted
Posted
On 11/13/2024 at 8:13 PM, John Burkeen said:

2019 Sivarado got 130,000 and the pushrods bent in cylinder five had a life time driventrain but is you event miss a cabin air filter change it was voided. so im SOL!!

Never heard of a life time drivetrain. What is that?

lennybg Enthusiast

lennybg

Posted
Posted
On 11/14/2024 at 8:18 PM, Bikerjon said:

Never heard of a life time drivetrain. What is that?

Dodge had them at one time... Bought a brand new 2008 Jeep Wrangler Sahara with he lifetime powertrain warranty. But no one reads the fine print.. You had to have the oil changed on time every time, even going over 20 miles would void the warranty. You had to have the dealer perform ALL recommended Mileage services, Miss one and the warranty is voided,etc... It was nothing more than a gimmick.

  • Thanks 1

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Newduramaxh*ar
      DTC P2C48 auxiliary cooling pump

      By Newduramaxh*ar · Posted

      I tried tapping it.  This might sound like a dumb question, you should feel vibration or some type of noise when it turns on? Can someone please verify? Thank you all!
    • Chuck FB
      first oil change - 2026 2500HD gas

      By Chuck FB · Posted

      I feel better now for my own view point and actions or lack there of towards the dealership service theme reading your post and others. GM corporate is who offers the two free oil changes on the HD trucks and I bought my truck in Feb of 2025 and those oil change offers run out within 2 years I believe and I highly doubt I will be using either one of them. I had asked if I could officially give those free services to another customer ( a friend ) and they said no, its all a GM corporate thing based on the vehicle in question. What that service advisor did however was go into a little story about how such and such customer was denied engine warranty because he had done his own oil changes because then they are not documented ... you see where that goes and so an employee playing the game of scaring the customer into having the service work done there most certainly triggered my thought process. At a later date I did talk to the person who handles warranty claims at the dealership and she said to be sure to document the oil changes and keep receipts for the oil and filter ( coped the receipts from cases of Mobil oil and case of filters I bought from them ) and the vehicles VIN, the date of service, mileage etc and staple that together as a record I would give them if that was ever needed and I keep my own log book for services for each vehicle as well. Oh and about 8 months after I bought the truck the dealer starts calling me to offer a maintenance service since they haven't seen my vehicle show up on their system ... for the mere fee of 300.00 Canadian to change the oil and rotate the tires and a few other minor checks and I declined the offer, I get the call again a couple of months later for the same thing and she could tell I was not interested and she asked if they should take my name off the call list and I said yes, do that !.    By the way did you happen to keep your factory oil filter to open it up and see the surprises inside as I expect some will show up as per the odd little sliver of metal shaving and particles that the filter does trap along with bits of grey silicone sealer that come off of the inside edge of mating surfaces. I have cut open every filter so far on my truck although few miles but have changed the oil often and the second filter was vastly better with very little of anything, that first filter was the unsettling one as I expected it would be. 
    • OnTheReel
      OCI, not when but why?

      By OnTheReel · Posted

      I get why they do this…but man…not ideal. I only extract on inboard boat engines because the drains are buried and even then I hate it because it’s easy to leave a quart behind with that method.   They should market it as an “oil refresh” not oil change!
    • KARNUT
      OCI, not when but why?

      By KARNUT · Posted

      I only get oil changed where I can watch. Valvoline pulls through the dipstick into a see thru glass. When done they show me the dipstick. About the only way they can mess up is using the wrong oil. But that secret wouldn’t stay secret long. Honda uses TQ wrenches on everything. You can watch through a plate glass window. Discount tires does that with tires. Trust but verify. 
    • Grumpy Bear
      OCI, not when but why?

      By Grumpy Bear · Posted

      I would not argue that with you. It would be pointless to argue against the truth and you speak the truth.    My question and in fact the entire point of this thread is an exploration into the levers of wear which happens no matter how well we maintain our powertrains.    Some of these levers we exert a good deal of influence over which can and do result is lower wear, longer powertrain life. Some others we are sort of stuck with.    An engine is typically done when the ring to bore seal no longer is able to do the job effectively. Normally the first thing to go in a engine otherwise well maintained and adult driven is this seal.    Looking into the means, methods, products and attitudes that influence the rate of wear seems a worthwhile inquiry to me.     

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...