YukonJohn

SOLD.

Fixed! When reinstalling the throttle body boot from my air box after maintenance I discovered the bottom of the rubber boot was mashed and was not seated properly. It had been sucking air, dirt, etc for over 50k miles. It threw zero codes...WTH! The sounds were coming from inside my throttle body via the gap in the boot. 20k miles later my cam lobe on #3 wore out and exhaust valve wouldn't open. 180 compression on all cylinders except #3...130. #3 is not an AFM valve so that wasn't the issue. It was eating about 2qts every 3k mi. I got my hands on a 2019 6.2 with 20k miles for 6k and had it swapped and added a new torque converter for 3k. Running like a dream. Big expense but way cheaper than trading Yukon with a bad engine. I got the Yuk for a great price originally and still am far ahead of buying something now.

I will have a 2019 10L80 4x4 trans from a High Sierra for sale next week 12/20/21. It was strapped to an L86 I purchased for my Yukon. 27k miles. Torque converter and wiring harness, but no Transmission Control Module($180 for a new one). I'll post pics soon. New one is $5700. $2800 OBO

Also, the remotes are set to driver 1 and driver 2 by default. You will just have to unlock your vehicle with the key fob, after turning on the auto memory recall in settings, and see which diver setting it activates. I assume the fob that was originally programmed 1st is set to driver 1.

My early model 2015 Yukon didn't have it but the plug is there so I installed one. My connection has no power. What fuse is it? Left or right fuse panel? Does this need to be programmed in the system to work? Thanks

I have a 2015 Yukon XL Denali(87K) with the exact same sound. Mine is off and on, usually after braking(but sometimes during regular acceleration or driving), and almost always between 30 and 50 mph. Sounds like something is loose and swinging in the wind. It has no definite rhythm and always stops after a few seconds to a minute. Random MADNESS! I WILL FIGURE THIS OUT!