2024 Duramax issues?

gassux

Member
Mar 14, 2010
362
18
18
I have about 4500 miles on my '24 the one thing that really irritates me is the exhaust brake. i think it hits harder when i have my atv in the bed than when I'm towing. It's very inconsistent. The HVAC system on auto is brutal too, seems to blow on max forever
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,743
5,911
113
Phoenix Az
Towed my toyhauler up to new mexico for a hint this weekend with my dads 24. It pulls the hills 2-3mph faster than the 20 (no tune) which makes sense as the derringer on my 20 pulled the hills 2-3mph faster too.

His rear leaf pack does not squat nearly as much as mine does though. His is a short bed 2500hd zr2. Mine is a long bed 2500hd high country. I wonder if gm upped the leaf rating some on the newer trucks.

Overall they have their give and takes. I dont care for his gauge layout and the gauges themselves. Clicking on the “phone” app takes you to carplay instead of the trucks version of a bluetooth connected phone so i cant easily add another phone like my 20. It just takes a few more steps. The fold out steps are slow compared to my amp steps, found myself almost missing it a few times. Still hard as a rock seats lol

I do like that the turbo brake is stronger than mine. Better leaf pack. The trailer display when hooked to a trailer. The adaptive cruise
 

Dozerboy

Well-known member
Jun 23, 2009
4,917
496
83
TX of course
His rear leaf pack does not squat nearly as much as mine does though. His is a short bed 2500hd zr2. Mine is a long bed 2500hd high country. I wonder if gm upped the leaf rating some on the newer trucks.
The rear suspension is really soft on my used 2022. From what I saw, they’ve done some weird stuff and had additional top overloads on certain trucks. I haven’t really figured out what package it’s part of. My truck didn’t come up with an additional top overload. I ended up adding a road active suspension just to get my truck up 1” in the rear then at the front. My work trucks usually gross around 9500 pounds and at that weight the rear my truck was a little bit lower than the front according to the fenders, which I don’t think is quite accurate because I think they made the fenders an inch higher in the front than the rear on these. My 2015 and older trucks suspension was perfect for what I do.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,743
5,911
113
Phoenix Az
The 3500hd gets 2 extra leafs for overloads that hit overload stops and maybe one other leaf in the pack, front gets a different torsion bar. Thats why i didnt go with a 3500hd in 2020. His 2500 leafs look just like mine but it certainly doesnt sag like mine.
 

Pure Diesel

Active member
Apr 22, 2008
902
159
43
Ventura County
Everyone I know that got a single wheel 3500 constantly complains about the harsh ride.
I have 30k on the truck now. No issues and my mileage has gone back up to what it was in the beginning. It changed after its last software update. I will say that the ride has changed. I have a section of concrete freeway that the beaming has gotten a little bouncer. Still love the truck.


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