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  1. hunterxx12

    6.2L Engine... What gas are you using?

    Besides octane, the only other reason to run premium fuel in a vehicle that doesn't require it is that in some cases (read - not all) that the additives added to the gasoline are at a higher treat rate than those added to regular unleaded. These additives have properties that can aid in...
  2. hunterxx12

    Ethanol Free Gasoline

    Thanks for your response. Our ethanol situation here in the US is not a simple one so I did my best to summarize it for the average user. I've been a "lurker" on this site for quite a while so I figured it was time I contribute back. :-)
  3. hunterxx12

    Ethanol Free Gasoline

    Ever since refiners and blenders of gasoline ramped back on their use of MTBE since 2005ish, most moved over to ethanol because it was 1) a cheaper alternative to blending in or refining higher octane feedstocks to unleaded gasoline to meet higher octanes and 2) using oxygenates (MTBE and...
  4. hunterxx12

    The dreaded suspension creak on 2012 Yukon Denali XL

    I have read through several threads in this forum about this symptom and it appears I have a failing ball joint (my self diagnosis). Assuming that my mechanic agrees with me, does it make sense to replace just the ball joints or do most replace the control arms as well? My truck has over 150k...
  5. hunterxx12

    2012 Yukon Denali XL tailgate doesn't close when hot

    My tailgate is completely functional when the temperature is low 80's and below but when it is much warmer outside, the tailgate has to be manually closed. This is regardless if I use the fob, console switch, or tailgate switch. I have already replaced the gas struts because one failed but...
  6. hunterxx12

    Power tailgate won't close when hot - 2012 Yukon XL Denali

    My tailgate will open by the key fob or by the switch inside of the vehicle regardless of temperature. But when it gets hot out (90 degrees or hotter) the power close does not work with either. Has anyone else run into this? I recently replaced the gas struts and that has not remedied the...
  7. hunterxx12

    Navigation Disc - Map Update Failed

    Thank you Marg for your response. Please let me know how your service appointment goes. GM has been trying to reach my dealership to instruct them on how to remedy this. Fingers crossed for both of us on this. When I called my dealer with the instructions from GMNAVDISC to "reset" the...
  8. hunterxx12

    Navigation Disc - Map Update Failed

    Hello - I own a 2012 Yukon Denali XL. I bought it used in January this year. The previous owner never updated the navigation system. I decided to order the new 2016 update from GM. I tried installing the update. It asked if I wanted to update which I said yes. I entered the license key and...
  9. hunterxx12

    Fold down panels on 2nd row & fabric behind third row

    Hi all - great looking forum. I'm hoping you can help me. I have a 2006 XL. The material on the back of the 3rd row bench has unattached itself from the bottom of the seat. Any advice or experience on how to reattach? There is a long plastic piece attached to it. Just can't figure out...

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