Charlie Richardson

34K on my 19 Denali 4wd 5.3l 3.23 gear. Zero issues so far. Only money spent was new tires yesterday, Goodyear AT were pretty much shot and getting squirrely on wet roads. Put Continental 70K highway tires on it. Much quieter and smoother riding.

You are probably correct. I doubt the dealer puts premium fuel in vehicles on the lot. That being said, I can find zero fault with the 5.3L and would probably still go with it again. The only thing that might persuade me to change would be the 3.0L Duramax and it'd take at least a couple more years to prove it's dependability.

Got a 2019 5.3 Denali 4wd, drove an identical truck with a 6.2 the same day and couldn't tell enough difference to justify the price. Almost 3 years later, I can honestly say that I've not had one incident where I needed or even wanted more power than my 5.3 puts out. I have been 100% satisfied with both the power and economy of the 5.3., even when towing my bass boat. Were I doing it over tomorrow, I'd make the same decision.