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  1. Lifted L5P

    Front Differential Gear Whine on Deceleration - Yukon 4.56

    Greetings everyone. Have a 2019 CC SB 4x4 Duramax with a 4-inch differential drop lift kit and 35 inch tires (305/70R18). Changed out the stock American Axle Manufacturing (AAM) 3.73 axle ratio ring & pinions to Yukon 4.56’s to properly turn my 35’s and get my towing performance back. Also...
  2. Lifted L5P

    Uneven Tire Pressures and Part Time 4WD Transfer Case ?

    Got a question for ya’ll ... and hopefully this is the right forum for this question. I know GM puts 60 psi front and 80 psi rear on the door sticker for heavy payload / towing considerations ... and possibly rear end stability as well. However, we all know this causes the front tires to sag...
  3. Lifted L5P

    Bad Transfer Case - Since New - 2019 Chevrolet 3500HD SRW SB

    Got tired of arguing with multiple local Chevy dealers that there was something wrong with my transfer case since day 1 (purchased truck new September 2018). When in 4WD and pressing down on the accelerator ... the truck had a significant vibration that I did not feel in my father’s identical...
  4. Lifted L5P

    New to Forum

    Thanks for the addition to the forum.