2021 yukon xl getting new rear end at 60K miles

[R32driver]

Bought it brand new in summer of '21 with 3 miles and here we are on warranty repair number 5 on this beauty This time it's the rear differential. The vehicle is actually out of warranty (63K miles) but the repair is being covered by our local dealership with little cost to us. It's been making a "humming" sound since about 55K miles or so and changing out the rear dif fluid did not help. That did fix the groaning noise when cold but not this annoying sound. It's at the dealership service department now and they told me the rearend was full of metal flakes. They also told me it's cheaper to replace the entire rearend than try to disassemble it and repair whatever is wrong. Should have it fixed by the end of next week.

Just a heads up it's another thing to listen for. If mine went bad yours could too. This vehicle does not tow anything ever and has just been used as a family hauler. At first it sounded like the rear hvac system was on full blast but that was not the case. I'm pretty observant to weird noises in my vehicles and I was correct to think it was something in the rearend

 

[WalleyeMikeIII]

Which rear diff do you have, the electronic limited slip or the mechanical one?

 

[jfoj]

First the 6.2l failures, then the 10 speed valve body problems, now the rear differential!!!

I guess the surface finish on the rear differential gears was not correct just like the crankshaft finish??

The entire powertrain seems to be a problem in this vintage chassis.

What do we have to look forward to failing next?

Plenty of software bugs in the Infotainment systems, but I expect we may have to live with many of these.

 

[GMCnewbee]

Things happen. I had a year old Sequoia get a rear axle howl and had to replace a rear bearing. Also had a pretty new BMW motorcycle that needed a rear wheel bearing. Just an imperfect bearing from whatever supplier made them. We do not live in a perfect world.

 

[Blackcar]

Bought it brand new in summer of '21 with 3 miles and here we are on warranty repair number 5 on this beauty This time it's the rear differential. The vehicle is actually out of warranty (63K miles) but the repair is being covered by our local dealership with little cost to us. It's been making a "humming" sound since about 55K miles or so and changing out the rear dif fluid did not help. That did fix the groaning noise when cold but not this annoying sound. It's at the dealership service department now and they told me the rearend was full of metal flakes. They also told me it's cheaper to replace the entire rearend than try to disassemble it and repair whatever is wrong. Should have it fixed by the end of next week.

Just a heads up it's another thing to listen for. If mine went bad yours could too. This vehicle does not tow anything ever and has just been used as a family hauler. At first it sounded like the rear hvac system was on full blast but that was not the case. I'm pretty observant to weird noises in my vehicles and I was correct to think it was something in the rearend

Has dealer serviced vehicle since new?

 

[R32driver]

Which rear diff do you have, the electronic limited slip or the mechanical one?

Mechanical. Had to pull out the window sticker and look cause I wasn't sure

 

[R32driver]

Has dealer serviced vehicle since new?

No and it's not the dealership I bought it at either. Just the local Chevy dealership in the small town I live in. It's been serviced there a handful of times but they earned a customer for life after this. Fantastic people. Hinton Chevrolet in Lynden, WA

 

[R32driver]

Picked it up today and all is well. Annoying howl noise is gone! They replaced the rear dif and either ate the cost or worked something out with GM. They said it was about a $4500 repair and asked me to pay $500 which I gladly did. Class act all around I definitely will be buying my next GM vehicle from Hinton Chevrolet

 

[2017sltXL]

No and it's not the dealership I bought it at either. Just the local Chevy dealership in the small town I live in. It's been serviced there a handful of times but they earned a customer for life after this. Fantastic people. Hinton Chevrolet in Lynden, WA

Can confirm, they are a class act. My late grandparents bought several vehicles there over the years and were always treated well. I remember one time in particular when we were visiting there, after taking his car up to Mt Constitution on Orcas Island it developed an issue with the transmission on the way back down to the ferry. He explained the situation to them that he really needed his car as soon as possible with extra family in town. I think they fit it in the next day. Don't recall the problem, that ended up being minor in nature, but was only without it for two days.

These smaller family owned dealerships are a rarity anymore but worth their weight in gold.

 

[WalleyeMikeIII]

I've had the best luck at small town dealers over the years...with my Chevy's, I always drove 20 miles south to the small town dealer, even for oil changes...they always gave me a loaner. Bought 9 Chevy's from them, but on this go around, esp in the 21-24, I just liked how the GMC looked a whole lot better...I do miss their service though...I should have just kept going there. Anytime I walked in the place, anyone who worked there would smile and say "Hi Mike." Can't beat it..