Add Failed Rocker Arm to the list...2022 Tahoe 6.2L under 6k miles!

[GMCnewbee]

Sorry to everyone for all of the bad news, but thanks so much for the reporting of these things. Especially important to report on the interactions with GM. I have to say that it does make me nervous about my ride, 2022 Yukon with the 6.2. If anything comes up I will report it as well.

 

[Micahsd]

Did yours break (error codes, misfire, etc) suddenly, or did you happen to notice any symptoms leading up to the collapsed lifter/misfire? Curious, because I just started to notice a ruff idle with mine when I come to a stop after cruising at highway speeds. It will then begin to idle more smoothly the longer I'm stopped (stop sign or at light). Minute or so,.

It drove fine for me to work that morning then when I started it up to drive to another location after it sat for a few hours I could tell right away it was missing. It was running very rough and after I started driving it down the road I got multiple warning messages about traction control and stuff.

I didn't live very far so I was able to get it home about a mile away in stop/go traffic. Really thought it was going to die while at stop lights.

What you're describing just sounds like the normal shake when idling. I think they all do that...mine did it before and continues to do it after.

 

[Rennsport]

No noticeable feel in loss of power or rough idle prior. Lots of warning lights came on, all of them, including things like traction control disabling. So many occurred I could not remember them. Power loss was very quick from that point. My wife thinks in hindsight that she heard the engine was ticking loudly when idling (she would know as she would get in the car after I started it, while I am in the car so, I could not hear it). Not sure if it is related to a broken rocker arm, but I have read others refer to a loud ticking sound as a possible warning to lifter failed. Maybe the lifters cause the rocker arm to fail? Ironically, I took it to the dealership 2 days before the failure and was there to get the TPMS working...it was idling the whole time while they walked around and programed the tires (walked around the car multiple times). I would assume they would have said something if the ticking was louder than normal. GM has to give 100k warranties for people that hand any engine failure issues, period. But they won't, they will let it play out in the courts as they move on to electric vehicles. Makes sense for their pocket books now, but they will lost me and many others as this goes on longer...I will never trust or buy a GM again (and again, I LOVE everything else about the new Tahoes, but safety and real customer service, come first!).

 

[dbphillips]

GM is not the GM of years past once they went to the Dynamic Fuel Management (DFM) system. I have owned 6 GM vehicles (4 of them Tahoe/Suburban), so safe to say, I am a loyal repeat customer. Not anymore! I was left stranded on the first day of a family trip, after a nerve racking experience of trying to safely get off the highway as the engine was shaking and even slightly engine braking (along with all kinds of computer notices/warnings). It behaved just like all the failed lifter descriptions. I will spare everyone the drama that ensued with GM roadside/rental cars/etc...let's just say, GM does not know how to help you on weekends (which is likely when you doing the most driving for trips...come on GM, when you know you have new cars braking down, be able to help people after 11am-Noon on Saturdays with rental cars, etc!). Anyway, the dealer thought it was lifter failure and then figured out it was a broken/failed Rocker Arm! I have not seen this posted before as an issue and the dealer said they have not seen a Broken Rocker Arm in 15 years (but they see lots of failed lifters). So, what does this mean? Do we have a another new issue? Could it be related to the DFM too? This is starting to sound like the Boeing ordeal when they tried to make the 737 more fuel efficient! Come on GM, get it together! Your brand is at stake. Own up to your issues/problems, do the recall on the lifters, redesign the engine to either handle the DFM (or disable it at least!)! I am going to sell my 2022 Tahoe 6.2L Z71 and get a reliable SUV...this will be my 6th and final GM product. Which is a real bummer as I love EVERYTHING about the new redesign, but need safety/reliability and company that cares when you get stranded, first!

Get the Duramax.

 

[dbphillips]

It seems poor treatment will be the norm. Our Mercedes GLS450 was wonderful, until it caught on fire, burned our garage down, and made the rest of the contents of the house a total loss because of smoke damage and asbestos, courtesy the great State of Washington and their oh so progressive worker safety laws.

A gentle call to Mercedes to see if there was any customer assistance to help us get into another Benz during the covid crisis (they would have had to have been awfully good to us, to be honest) yielded a rather terse letter that was along the lines of "if you are going to sue us, you better pack a lunch, peaon!"

The Duramax brought us back to Chevy, spending 2/3 more than we did on the CPO Benz. The one benefit is we got more in insurance than we paid for the car.

But not replacing the components on the second bank of a GM V8 after those obviously from the same lot failed on the first bank is criminally stupid and deserving of class action activity.

Take solace, though, Ford is now on the hot seat for even worse warranty costs than GM.