Sold my new tahoe

[Bill 1960]

An assumption based on empirical evidence, the evidence provided by posters that are having problems. That assumption will be proven right or wrong in a few months. The problem appeared with the introduction of DFM in 2019 which doesn't support a bad batch of whatever component one wishes to blame.

Correction: Problem first appeared with the introduction of AFM, the technology has been problematic from the beginning. Why on earth would we attribute failures to a bad batch of something.

By that logic you could attribute the problem to the introduction of the automobile. How many vehicles driving every day without the issue?

I can see you have a lot of interest in this subject, however I don’t so I’ll yield the field. My final thought is the OP may-or may not- be merely a troll or a provocateur inclined to make a stink on a product forum.

Best wishes to everyone affected by new product pains.

 

[Thunder22]

I picked up my 2021 on November 9th 2020. Works great.

 

[B520044]

I've had the pleasure and displeasure of owning two 2021 Yukon's. The first had many issues and I even filed a lemon law claim. I had it one year exactly, with over 16k miles. No lifter issues, but it really ran poorly. Ruff idles, poor shifts, rattles everywhere, shaking, defective parts from factory; etc etc.

However, my AT4 has none of that (now over 1k miles). It does have some ruff shifts occasionally during busy traffic, but nothing like my first. Also, a slight creak in dash just above the gauge cluster when the dash heats up from sun. Nothing major and I think getting a sunshade will take care of it. I just wish someone would come out with a DFM disable. I really don't trust DFM in these trucks and can feel it engage/disengage.
In the meantime, I will change the oil after the first 3k miles and every 5k miles after that. It looks awesome and my kids love the space. I have plans to take this all over the county and pray it will be reliable.

 

[wsteele]

When running shops I told many many many customers that oil is the blood of the engine and if you don't take care of it by using quality oil and filter and timely intervals, mileage or time, they can kiss the engine goodbye. Even with full synthetic oil and premium Wix filter, I do it every 5k miles or 6 months, whichever is first. I live where I work and have owned this rig for a year in July and only put 2k miles on it. Still has had 2 oil changes.

I do the exact same thing. During the height of COVID we weren’t going very far, two changes were at about 2500 miles each. The inside of my engine looks very clean.

 

[OR VietVet]

We just had mine partially apart, on the top end, to do the valve covers and the knock sensors and my engine, that I could see, looked really good and clean with no sludge anywhere. The buildup inside the valve covers themselves was very minimal.

 

[Micahsd]

According to this new TSB it shows the bad lifters were installed in vehicles between Sept 1, 2020 and March 31, 2021.

https://static.nhtsa.gov/odi/tsbs/2021/MC-10197298-9999.pdf

 

[Quark]

According to this new TSB it shows the bad lifters were installed in vehicles between Sept 1, 2020 and March 31, 2021.

https://static.nhtsa.gov/odi/tsbs/2021/MC-10197298-9999.pdf

Yet they aren't changing lifters on the opposite bank imagine driving that engine for 50,000 miles wondering when the other lifter will drop. Won't those affected vehicles have lower value?

 

[OR VietVet]

Yea, it says replace all lifters and lifter guides on the "EFFECTED BANK" and at this time it is not required to replace the other lifters.

How freakin' stupid is that. Now, like @Quark said, you will be driving around waiting for the other shoe to drop. Stupid, stupid, stupid for GM to do this to their customers and taking a chance on another inconvenience for them. Whoever made that decision does deserve a throat punch.

 

[SSGUNNER]

From my understanding GM is replacing both banks depending on mileage. Also powertrain is getting extended for these affected vehicles.

How GM Dealers Handle Engine Valve Lifter Issues

Affecting 5.3L L84 and 6.2L L87 V8 engines.

gmauthority.com

 

[OR VietVet]

From my understanding GM is replacing both banks depending on mileage. Also powertrain is getting extended for these affected vehicles.

How GM Dealers Handle Engine Valve Lifter Issues

Affecting 5.3L L84 and 6.2L L87 V8 engines.

gmauthority.com

That was funny, reading thru the comments. Nit picking about spelling, saying valves when they meant lifters and arguing about paying $85k and expecting better service than someone that paid say $50k for a different rig with the same engine in it. One guy chiming in and asking for someone to be NICE!!!!!!!!

It takes all kinds.