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    Air Shocks not Pumping Up?

    I have a 2018 Yukon XL Denali with the MagRide / air shocks in back. I swapped in a set of ARNOTT AS3429 to delete the MagRide but retain the air shocks to level the truck out when towing. Swapped the shocks in July of last year. I have towed since installing them and the truck leveled out...
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    Breaking the Bead on a 22"

    So... I have a 2018 Yukon XL Denali with the 22" chrome snowflake wheels. I picked up a set of 20" OEM wheels off a 2022 Sierra. The previous owner of the 20" wheels had a tire shop break the outer bead and pull his sensors. This got me thinking, as I am a cheapskate... I could do the same...
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    Looking to Buy New Battery Cables

    Finally back in town to put a new battery in the wife's 2018 Yukon XL Denali. Was thinking it might be a good idea to replace the cables while I'm at it. It is my understanding the negative cable can cause weird electrical gremlins as it degrades. I looked on GM Parts Direct and can't figure...
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    Battery Replacement a Professional Job?!

    I have a 2018 Yukon XL Denali. Wife took it in for a leaking tire. They tested her battery while they had the car - curtesy check. They said it is a bit weak. I went on to Advance Auto's site to price a replacement, and they have it listed as a 'professional only' job. I've torn a few older...
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    P0700 and U0100

    Wife called me, said truck won’t start. She waited a bit, it started in limp mode. She drove short distance and parked it, unsure if she should proceed. I drove to vehicle (2hours later) and pulled codes P0700 and U0100. Started truck just fine. Truck drives good. CEL is illuminated. I did a...
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    Looks Like I Need New Rear Shocks

    I have a 2018 Yukon XL Denali. It appears the rear shocks are worn out. I say that because there is an audible leak from the driver side rear shock that I can run my finger over and feel. I know the truck has mag ride. I assume the rears are mag ride also? I looked them up on...
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    2018 Denali/Towing Car Trailer

    I have a 2018 Yukon XL Denali with the tow package. I plan to tow a 1990 Jeep Cherokee (XJ) on a home built car trailer. This trip will be ~600 miles one way. I have done minimal towing, none with this truck. I have read a distributive hitch would be a good investment. Looking for advice on...
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    Delete AFM

    I have a 2018 Yukon XL Denali with the 6.2l. I recently purchased it and am new to the platform. I have read the AFM system is problematic and is best to delete it. There is nothing wrong with the vehicle currently. Can I get one of those tuners that turns it off and call it good? Or do I...
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    Groan Sound

    When backing out of the driveway. When the front axle hits the dip between the concrete drive and the asphalt street. The wheel is turned hard passenger. One out of 4 times (or so) there is a groan sound from the passenger front corner of the vehicle. Any ideas? I haven't crawled under it...
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    Hello All

    New member here. Just bought a 2018 Yukon XL Denali yesterday. I found this forum while researching the vehicle. Thanks for gathering all of this knowledge in one place. This is the newest GM I have owned, last one was a 2002 Z28 and the one before that was a 1979 Camaro. Looking for a list...

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