They will be weak compared to an ecoboost but pretty sure 2014 was a year they got a 50 ish hp bump. If you keep it in an rpm range where it makes power it will tow fine sub 2000 is not where you want to be.

DuraMax lover here. I had a 2017 HD2500 and it was a beast and would pull anything I wanted, only problem was when empty it would rattle your teeth even when lowering the air pressure in tires. The trips down the PINS were terribly on my wife and I and one trip about 22 miles down she yelled at me to stop and get rid of this tank because her neck was hurting from the rough ride. I purchased a 2020 1/2 ton GMC Sierra with the 3.0 Duramax and it is like driving a caddy. Going to the beach my best mileage has been 31 and and towing my 21 Triton it will be about 15mpg. Best move ever and if you get one make sure you get the multipro tailgate to get in the back. It's a back saver to get in with that step. I had a 2015 5.3 in a half ton and towing a 28ft RV was a joke around the hills by three rivers, thought i was gonna have to get out and help push. LOL

I've got a 15 with a 6.2. Would never own another 5.3. Average 18mpg not towing. I've never put more than 87 octane in it because computers yo.

^^^^^ Exactly

I agree. Love mine. Same amount of torque as the 5.3, but you get it immediately, not higher in the power band.

Gas is to expensive for the 6.2

3.0L duramax

I would read up on these motors and search for issues....I thought my 2021 AT4 would be invincible...and it was for 14,000 miles.

Ive got the 6.2 which is a beast of a motor - lifter banks are a real issue...I found this out two weeks ago as my truck failed on vacation...bent lifter rods and other problems...waited for my truck to be repaired in Colorado for a week...then picked it up and got 50 miles down the road to have the same thing happen again...limped it home and now having to have it fixed again. UGH.

Be careful and do your homework. When I asked both the dealer in Colorado and the Dealer here in Dallas if this was a common problems - they both see this "all the time". In their words - not mine.

That stinks. Sounds like the repair was not done correctly. I have two friends with new 6.2s that haven’t had a single problem and love their trucks.

So when I overstate a problem...I like to fix it. After further review by Sewell GMC (insanely good experience here-never been before) I learned that my problems were a simple fix due to an incomplete job in Colorado Springs....Spark Plugs never got tightened LOL - OMG I fought that thing all the way home LOL. I'm gonna keep it...Be crazy not to I guess...bought a month before prices went haywire - the same truck costs 20 grand more today so I need to give this a shot after cooling down!

Do Not get a GM truck with AFM or DFM. They are junk waiting to fail.

Had an '08 with 5.3 , AFM lifters collapsed and ate the camshaft. GM wouldn't own up to their bad lifters and they knew.

Dumb arse me thinking they had the lifter issue fixed by 2017, but no I had a AFM lifter collapse at 28K miles and luckily didn't damage the camshaft. Repaired under warranty.

Also had 3 fuel injectors fail too. Truck was out of bumper to bumper and fuel injectors aren't covered under the powertrain. Yet they are covered for Californians for up to 150K miles.

Now my entertainment touch screen has bit the dust at 36K miles.

No, I didn't buy a lemon. Just go on the GM forums and you will see what I'm talking about.

Did you here about the latest class action GM just lost due to oil consumption issues?

Chevy is building junk in my opinion. Correction GM is building junk.

I agree GM with AFM is among the least reliable of the big name trucks these days. Co-worker brought a brand new Tahoe and I was in it with her when it started making crazy noises. She pulled it over and had it towed to the dealer and had the lifters replaced. 5,000 miles on it.

Most reliable is a Ford 5.0, Ram 5.7, or Tundra 5.7. Ram's 8-speed transmission is the best trans in a half ton IMHO.

Chevy makes good trucks outside of AFM. My L5P Duramax is a powerful beast. The baby Duramax in half tons is pretty reliable. Just don't touch their AFM engines.

I went from 2016 Tacoma V6 to 2023 2500HD 6.6L gas, been getting 15mpg whether towing boat or not...forget about the boat behind me now.....has a little pep. Stayed away from the diesel...

I'm actually shopping a new 2500 HD Denali with the 6.6 gas. I know it don't have near the power as my F250 PS but I've driven nothing but F150's and F250's for the past 15 years and am getting board with them. Feel like every time I get a new truck its just like my old one. Time for a change.

The 6.2, especially with the new 10 speed, is a hoss, and will easily pull a 21' boat. We've had 2 6.2's and both were great motors - both in Denali SUV's. We had a 5.3 1/2 tom truck, and it did struggle with hills, and drank the gas while pulling (7 mpg). I know this is a 5.3 / 6.2 post, but I've heard great things about the little Duramax. I'm on my 4th 3/4 tom Duramax and love them. If I didn't need it for gooseneck hauling, I'd think about the small D-Max.