A lot less.
Yet....a lot more ($$).

and only getting higher...$$$$

I own a bone stock '16 and before that a bone stock '13 and never had any issue with emissions on either one. My brother in law retired about two years ago from an oil field construction company after 35 years or so with them. They started buying Duramax's when they first came out and at the time he retired had probably had ?? 34-40 of them. They would hand them down from the supers to operators at about 100k miles and then trade them in at about 250k or so. The only problem they ever had on any of them was one LML that lost it's cp4 at just over 100k and the dealer fixed it because they'd bought so many trucks from them; even though it was out of warranty..

Buy your truck and leave it stock and you will be fine. Change the fuel filter every other oil change. Buy your fuel at major brand stations that pump a lot if diesel.

For those of us who want to keep the truck to 500k I guess the dpf egr prob def systems etc will need replacing likely and egr and intake cleaner. Egr is a joke.


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Before we purchased our 19 L5P 3500 ltz drw, we test drove about 30 different trucks (from all 3 of the manufacturers over a few model generations). 3 were chevys (2015, 2018 and then the one we bought).I was not interested in the new gm 10 speed (that they labeled allison) transmission. History has taught me to wait a few years into a production cycle for them to work out any issues.

Both the 2018 and 19 had alot more noticeable power then the 2015.

I was trying to convince wife to go with the cheaper 2015 used road when we narrowed it down to GMC. She did like it but asked me to at least see what a 19 would cost us. I was surprised when they dropped the price to less then a cost of work truck from the other manufacturers and only $12k more then a 5 year old with 90k miles.

No regrets 1800 miles later. Only regret is what the DMV thinks I should be forced to play for license plates.

I just bought a 2020 after owning a 15 duramax and 17 powerstroke. I am pretty impressed so far however a power bump to better compete with the competition wouldn’t hurt my feelings one bit. The 10 speed Allison is night and day better than the 6 speed from my 15. The truck shifts so incredibly smooth and is just always in the right gear.