NHTSA Complaint #11690082 — 2021 GMC YUKON

While driving on the and merging onto the highway, the check engine light and other alerts came on our 2021 GMC Yukon. There was a fluttering noise coming from the engine and the vehicle started to have decreased acceleration. We had to immediately exit the highway and park the vehicle. We then had to take our vehicle to our regular mechanic since GMC dealership was backed up and we needed the vehicle repaired. Our mechanic has identified the issue to be with the engine. The lifters in the engine broke which also damaged the cam shaft. This is a very costly repair. Our vehicle is four years old and out of warranty since we have 80k miles on our four year old Yukon. This problem with the GMC L84 5.3L V8 engines seems to be a common issue and other owners have posted their frustrations on various websites and there is currently no recall on this 5.3L engine. This is a safety issue and a recall should be issued like the one for the 6.2L engine. Why is there no recall for the 5.3L engine? A recall needs to be issued for the GMC L84 5.3L V8.