not that I'm against the 3.0, but what's the total # of 3.0s vs the V8s over the past couple years? "few" issues on an engine that represents 10-15% of all powertrains...what's the percentage of "issues" between the two?
my 2 cents would be to stay away from the 6.2 if you're scared of failure, but even with that said, ultimately how many failures have resulted in GM not fixing them under warranty? Sure, being without a vehicle for a month would blow, but everyone's loaner/rental/just using the other vehicle situation is different.
had a 21 AT4 with the 5.3 (45k miles) 22 Z71 with the 5.3 (15k miles) and now a 23 Z71 5.3 with almost 50k...only engine problem on all three was an idler pulley on the 21.
if I had a complete engine failure in the first 5k miles I'd be ticked too