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  1. apex944

    L87 Failure - Taking formal action

    Nobody wants it
  2. apex944

    L87 Failure - Taking formal action

    I have a borescope w/ camera. Good idea.
  3. apex944

    L87 Failure - Taking formal action

    I briefly outlined my failure scenario in this post. Here is my plan to request that GMC deal with the situation BEFORE I have a safety issue at speed. My Argument: “GM’s known defective L87 engine is continuing to generate objective wear evidence after the recall remedy, and GM’s own recall...
  4. apex944

    UOA and Filter photos of L87 time bomb.

    Yup. The air suspension is the entire problem. Totally undamped. (I sell race shocks so I have experience with this)
  5. apex944

    UOA and Filter photos of L87 time bomb.

    Assumption 1: I'm not stressed. Assumption 2: Dealer is not going to give a new engine. Do I like the vehicle? Well ... about that... Setting the engine aside for a moment. I have the air suspension. There is zero damping.. none. The "shocks" feel liek they are blown. It clunks over...
  6. apex944

    UOA and Filter photos of L87 time bomb.

    Let me tell you an L87 story, with documented evidence of how bad these engines are. My 2024 Yukon Denali is just over 2 years old with 20k miles on it. Passed the Pico Test at its first post-recall service. At that time the oil was changed to 0w-40 and got the new cap. 2500 miles later I...
  7. apex944

    BREAKING: GM is officially recalling the L87

    Scroll back a few pages. I posted my analysis. And yes, you will be able to see it coming. I plan to do an analysis after every one of my oil changes which I'll be doing at 3000 mile intervals. Also Lake Speed did a couple videos on this recall and the benefit of analysis.
  8. apex944

    BREAKING: GM is officially recalling the L87

    Service Manager where I went told me he had 16 L87 in and tested this month and 4 failed. Not a huge sample size but 25% :oops:
  9. apex944

    BREAKING: GM is officially recalling the L87

    Mine went in this morning and it passed. 10,500 miles and a 40wt. filler cap. It has now had 4 oil changes. This should be enough changes to have flushed out all "break-in" material. I will be doing oil analysis and changes every 3000 miles. Will be watching those wear metals like a hawk !
  10. apex944

    BREAKING: GM is officially recalling the L87

    >> The button for that is under their screen name. Thank you !
  11. apex944

    BREAKING: GM is officially recalling the L87

    I will be pulling samples at 13,000 and 16,000 and submitting to Lake for analysis.
  12. apex944

    BREAKING: GM is officially recalling the L87

    OK here is the first oil analysis I've done on this truck. I use this service on both my race cars and never thought I would need it on the tow vehicle :mad: This sample was from after removing the dealer changed 0w-20 that was put in around 7000 miles during it's "first scheduled service"...
  13. apex944

    Unexpectedly in market for 25 Yukon Denali Ultimate

    Even if you dont "qualify" ...just ask and you'll likely get it. Ask me how I know. I flew into MI from PA to get mine with this discount.
  14. apex944

    BREAKING: GM is officially recalling the L87

    Thx for repeating your answer, I do appreciate it. 80+ pages was too much to get through. :thumbsup: and Agreed... I would think that the root cause would affect every L87 engine made in that St. Catherine's engine plant. Unless they had multiple L87 production lines there and the tooling...
  15. apex944

    BREAKING: GM is officially recalling the L87

    I saw a 3% failure rate somewhere. Say it's double or triple that in the end... How can something so catastrophic as a crank / bearing manufacturing issue affect only a small % over multiple years? I read many... but not every post here so apologies if this was addressed.
  16. apex944

    BREAKING: GM is officially recalling the L87

    That's exactly what I am hoping as well. I use the service on my race engines. Engines that often only have a few hours on them. You can see component failure long before anything is visible in the oil. It's a great tool.
  17. apex944

    BREAKING: GM is officially recalling the L87

    2024, 0w-20 was changed once during initial service at 7500 miles. At 10k now. Swapped out the lighter fluid for real oil yesterday. Cut the filter open so I could sleep at night. Happy to find nothing in it. Took an oil sample and sent it off to Lake Speed for wear analysis.
  18. apex944

    no heated Windshield on a $90k SUV?

    716 here as well. Truck is parked outside. Nothing is a need. As mentioned, I think it should be an option. Have to spend an inordinate amount of time chiseling the ice off the wipers due to their location on this vehicle.
  19. apex944

    no heated Windshield on a $90k SUV?

    Heated fluids and air defrost will not clear the windscreen in any reasonable amount of time. An in glass element will start melting within minutes. A heated screen can be an OPTION.
  20. apex944

    no heated Windshield on a $90k SUV?

    Hey GM if you are reading this forum. Why is there no heated windscreen option for the Yukon Denali etc? Winter has finally come here in the NE USA and I spent 30 min scraping ice off my wipers and windshield that I never had to do with my previous 2 luxury SUVs. With auto start enabled...
  21. apex944

    Software Update

    same question here
  22. apex944

    Denali 22" wheels available.

    SOLD Locally.
  23. apex944

    Denali in the OBX NC dunes?

    On the 2024 I have it shows T/C disabled when I put it in "Offroad Mode" ... This one also has the mechanical LSD and 2 spd transfer case. Sounds like you guys are familiar with the area. Is there a specific spot on Carova that we are most likely to see the horses in late Sept?
  24. apex944

    Denali in the OBX NC dunes?

    Thanks. The air stations was another question. Appreciate it.
  25. apex944

    Denali 22" wheels available.

    Put these wheels up on Craigs List https://pittsburgh.craigslist.org/wto/d/wexford-2024-gmc-yukon-denali-wheels/7774881501.html

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