2019 Yukon..Loud in front end/rumbles?

Discussion in 'Engine & Drivetrain' started by Ron McKuin, Dec 8, 2019.

  1. Ron McKuin

    Ron McKuin TYF Newbie

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    My 2019 Yukon sounds like it has 100 lbs air in the tires, but only at 34! Every small crack or bump in the road sounds very loud inside. Almost a constant rumble on many blacktop roads. I have owns 6-7 Yukon’s and Tahoe’s and I don’t remember any of them making this much noise. Any suggestions?? Thanks
     
  2. wjburken

    wjburken Supporting Member

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    That being said, how many miles are on the vehicle? What type of suspension do you have? I’m not that familiar with your year of Yukon but others here are.
     
  3. James Ward

    James Ward Member

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    OK I have a 2015 Tahoe LT with 62.000 miles and mine was exactly like yours. Noisy and hard riding. But that was with the door sticker recommend 35PSI in the tires. So I tried out 34, then 33 and that seems to be the sweet spot. Now that causes me to wonder. . . If 35psi is what they wanted, and when warmed up that is 37psi ? Not 35psi ! so if I put in 33psi and when warmed up it is 35psi, then where's the how and why of the door sticker ?
     
  4. swathdiver

    swathdiver Full Access Member

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    Door sticker is cold inflation, before they get heated up. Always set the air in the tires when cold for best accuracy.
     
    Last edited: Dec 24, 2019
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  5. James Ward

    James Ward Member

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    OK, I have a small air compressor in the garage. Will do Boss ! 35 it is.
     
  6. tom3

    tom3 Member

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    I notice in town on the usual bad streets our '19 Tahoe has the booming effect on bumps, goes away at speed. I assume there is thinner metal in the roof or less reinforcing to reduce weight for fuel economy, the roof flexing causing the noise, or something else maybe?
     
  7. gat0r

    gat0r Full Access Member

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    OP
    what size wheels & tires are you running?
    also which tires?


    i found 35 cold is too high... w/ my driving i can heat them up in the 40's range.

    https://www.tahoeyukonforum.com/threads/what-is-the-correct-tire-pressure.113797/page-2#post-1367969





    i typically use playing card, temp or chalk trick to figure out what works best to start.
    (as of late, i like temp & card tricks, best)

    1) temp -
    take temp on tires cold...inside/outside edge & middle for all 4 tires. then go for a 10-15 mile drive on highway. back home on a flat surface, check temps again. if the center of the tread is cooler than the outer sides...the tire is under inflated. if the center is warmer than the sides...then you are overinflated. if the outer tread is warmer than the inner or vice versa you have a possible alignment or carter/camber issue.


    2) playing card -
    on warm tires, inflate w/ air until you can slip a playing card under tire to edge of 1st lug. then slowly deflate tire until card drags on removal (if you cant remove card, you deflated too much)


    3) chalk method is tedious for sure.
    [concrete is actually the best choice, but you can also do this on asphalt.]
    on warm tires, color a section of your tire with chalk to see how much tread is making contact with the ground. on a flat road surface. make a mark with soft chalk that goes all the way across your tread. then, gradually drive your vehicle forward about 50-60 feet and then backwards to starting point. (50-60 feet)

    check out the chalk on the tire. if the chalk is only worn off on the center of the tire, reduce the tire pressure slightly and go through the process again. with the adjustment, you should see the chalk wear off more completely. keep making tiny adjustments in the tire pressure until the chalk wears off evenly and all the way across the tread. reapply chalk as needed for testing. you must complete this process for each of your tires.
     
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  8. Ron McKuin

    Ron McKuin TYF Newbie

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    By now I nave about 17000. Not sure of the type of suspension. Not magnetic I’m told.
     
  9. Ron McKuin

    Ron McKuin TYF Newbie

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    That is a new idea!! Thin metal in the roof? Thanks!!
     
  10. Ron McKuin

    Ron McKuin TYF Newbie

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    I have the Continental Crosscontact LX20 275-55R-20 tires.
    Thanks for reply.
     

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