NHTSA Complaint #11558123 — 2012 GMC SIERRA 1500

Lifter Failure: I was traveling to a State Park in Northern Michigan when my engine starting running very rough with major power loss. My check engine light activated, and I pulled over as soon as I could. It was dangerous because I was pulling a camper and I had to drive well under the speed limit. The Certified Chevy Dealership discovered a collapsed lifter and Cam damage. They considered this as catastrophic engine failure, and I was completely shocked as the vehicle had roughly 129k miles on it. There was no indication of failure prior to this incident as the vehicle ran perfect. I am very disappointed in GM as I have a co-worker with the same year truck that had the exact same issue shortly after I did. A friend of mine also had this happen with a 2014 vehicle of same make and model. It appears that this is a common issue with GM's newer 5.3 engines which used to be extremely reliable (99-07). GM needs to fix these lifter issues because a newer technology engine should last much longer.