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  1. Z

    PPV Line Up

  2. Z

    PPV Line Up

    fyi
  3. Z

    Transfer Case Fluid 2005 Yukon Denali...

    GM Service info MANUAL TRANSMISSIONS / TRANSFER CASES and POWER STEERING The content of this bulletin does not apply to manual transmissions or transfer cases. Any vehicle that previously required DEXRON®-III for a manual transmission or transfer case should now use P/N 88861800. This fluid...
  4. Z

    Transfer Case Fluid 2005 Yukon Denali...

    fyi This information applies to 2007 and prior GM passenger cars and trucks. Dexron III is being phased out as a product name. It is being renamed Manual Transmission Fluid and carries p/n 88861800 U.S. (88861801 Canada). If fluid p/n 88861800 U.S. (88861801 Canada) is not yet available when...
  5. Z

    First oil change at 1455 miles

    https://www.gm-trucks.com/2026-chevy-gmc-oil-capacity-guide/
  6. Z

    Another oil weight question

    One important spec missing; Volatility Fact, dexos allows 13% loss AI Overview Engine oil volatility refers to how easily oil evaporates ("boils off") when exposed to high engine temperatures. Higher volatility leads to increased oil consumption, sludge formation, and reduced protective...
  7. Z

    Another oil weight question

    SAE 0W-20 was adopted by Honda and Toyota in 2009 for most gasoline-powered applications. They have some of the most dependable engines so its not the oil. Yet people who know absolutely nothing about motor oils think they can outsmart the engineers and use whatever makes them feel good. I'm...
  8. Z

    oil Viscosity for hot wether.

    Saudi Arabia thanks you for your support!
  9. Z

    [SOLVED] 2021 Tahoe Duramax: Cold Hesitation, Shudder, and Throttle Lag — No Codes

    Poor engine performance may be due to fuel contamination.
  10. Z

    Why have more than one SUV?

    I drove suburbans for work for some 30 yrs. It was my office. Never owned one though as I prefer a truck. Here is one of my special F&SO burbs. K3500
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    2026 Tahoe Order Constraints

    When I ordered my truck, within 2 weeks the salesman showed me proof the truck was allocated. I had the order number given when he keyed in the order (with me looking over his shoulder). So when he pulled it up it said status "2000" Listed below are the different event codes and their meaning...
  12. Z

    2026 Tahoe Order Constraints

    GM is not going to change in the middle of the model year. It supposedly a fuel economy feature and there will b just as many, if not more, disappointed its not there then those wishing it gone. Look at the class action lawsuits for lower fuel economy with the 0W-40 recall fix.
  13. Z

    2026 Tahoe Order Constraints

    This causes a lot of issues. When you place an order with a dealer, the order status is 1100, PRELIMINARY ORDER ACCEPTED by the order system. UNTIL GMAD ACCEPTS the order, it just sits there at 1100. You don't have an order with GM at this point. You only have a dealer requesting an allocation...
  14. Z

    Just took delivery of a 25 Yukon Denali Ultimate Duramax - First impressions

    I left the dealer and drove my truck home some 100 miles at 60mph. Over a year later and no problem and averaging 27 mpg. No special break-in required. Friend drove his 2025 Sierra from Milwaukee WIS to Houghton Mich, some 330 miles at speed limits. No problem. His 2nd 3.0L truck Blue DEF...
  15. Z

    2026 Tahoe/Yukon Differences

    NO Its displaying the progression of models from basic to high end!!!!!!!!!!!!!!!!!!!!!
  16. Z

    2026 Tahoe/Yukon Differences

    fyi
  17. Z

    New Tires Installed, New Vibration

    Its the tires, its the tires. Get a different brand. Tires can be perfectly balanced but be out of round as NO tire is perfect. Been there and after replacing the first set of GY's and still vibrating, went with Michelin and problems solved. Not everyone can balance tires, its take a certain...
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    2026 Tahoe/Yukon Differences

    Laura has 7 LZ0 '25 & '26 Yukons PS - Destination charge went up to $2595 https://www.laurabuickgmc.com/searchnew.aspx?ModelAndTrim=Yukon&Fueltype=Diesel%20Fuel
  19. Z

    How do we feel about a "Fuel induction service" on the recalled engines?

    The PCV system is a emissions control device. A poorly designed or maintained catch can will cause problems by restricting the engine's PCV system which can cause far worse problems than a little oil in the intake.
  20. Z

    How do we feel about a "Fuel induction service" on the recalled engines?

    Catch can use caution..
  21. Z

    How do we feel about a "Fuel induction service" on the recalled engines?

    IMO all this is another over-priced money making scheme by the dealer. But heck, if you want to throw money away, go for it. The dealer is going to try to get every dime they can from their customers, to them you are money in the bank if you are gullible enough to buy into their scheme's.
  22. Z

    Any recently ACCEPTED orders by GM?

    from a post a while back on another site .............. When you place an order with a dealer, the status is 1100, PRELIMINARY ORDER ACCEPTED. UNTIL GMAD ACCEPTS the order, it just sits there at 1100. You don't have an order with GM at this point. You only have a dealer requesting an allocation...
  23. Z

    2025 Yukon DEF gauge pic?

    The DEF level gauge does not operate like a typical float-style gauge that is used in a fuel tank. The Engine Control Module (ECM) monitors the DEF level and consumption rate in order to calculate an estimated range. DEF levels are detected by the DEF level sensor.
  24. Z

    Early oil change opinions

    You make it sound like there is no oil filter on the engine. Any such debris would be caught and retained by the filter. If anything, changing the filter sooner makes more sense. All this concern about machining debris is much ado about nothing. The castings are thoroughly cleaned before...
  25. Z

    Early oil change opinions

    You can do oil changes before their service interval, but its highly unlikely to make your vehicle last significantly longer than if they were maintained normally, but it will increase the cost of ownership.

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