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  1. R

    Air cleaner body removal

    I have a 2015 Yukon 5.3. The guidance says that for several operations, including battery or headlamp replacement, the air cleaner housing should be removed. I have no problem removing the top cover or filter. Guidance says that the air cleaner body simply pulls off, but mine has not yielded...
  2. R

    Drivetrain protection system

    The recent recall of Yukons, etc., speaks of activation of the driveline protection system. I have been unable to find anywjere a description of what this system is, and how it functions. Does anyone have a GM-issued descriptino of this system? No conjectural answers, please.
  3. R

    Engine rough

    My 2015 Yukon 5.3L, at about 40,000 miles, started idling roughly when stopped and in gear. Smooth in neutral; smooth on the road. Now at 49000 miles, seems to be getting worse. Dealer tells me this is usual and not repairable. Anybody else have this issue, or get that tale from the dealer?
  4. R

    Naigation software update?

    I have an early 2015. The software (not map) of the Navigation System is terrible. Does anyone know if there have been any updates to the software in the 2015s, and if so what bulletin number announced it?

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