My 2023 failed at 18K miles. Two failed lifters. Motor replaced. Then 7 more service visits after due to head gasket leak, valve cover leaks, and exhuast leaks. Opened lemon law case in Ohio (purchase state). 4 months later they responded, offered me $5K cash, argued, they came up to $6.5K cash, I still said no. The replacement block has a loud lifter tick now and I've been to 3 dealerships in the area. The techs hear it and want to fix it, but GM won't approve. Last visit I overhead the call to "GM Internal Tech Level 2", and GM said "it has to throw a code for warranty authorized repair". Ok no code, but a very loud "whack whack whack whack whack". Last time it waited until it threw a rod to throw a code. As of now my lawyer is investigating if we should sue for breach of warranty.
Here's the sound that haunts me to this day (not mine, but exact same) --