ShotgunZ71

My 2001 High Country did the same thing. Sometimes they'd work, sometimes they wouldn't. Pretty sure it was a camera issue. Don't have the truck anymore to try different remedies.

The idea of a RAM with the Cummins/ZF combo intrigues me as well, but only with a dually and 50 gallon tank. Like you, my current truck has been great so far. Granted only a couple years, but no issues to speak of. I've always been a GM person, but my current Ford has been great. I had issues with 2 of the last 3 GM HD trucks I had. Since, the transmission issues have increased, the oil in coolant issue, and the sliding window frame cracks still make me skeptical on going back right now. Then, some people still go 100s of thousands of miles on any of the HD trucks from any brand and never have an issue. Get what you want, you can always get something else if you don't like it.

I'd let it ride. Good job, @Pryme!

I think the room and tech in the new trucks is great, but the powertrain is better and more reliable in the previous gen. The 2017-19 seem to be the sought after GM trucks. L5P with a genuine Allison is a sweet combination.

An oil analysis by Amsoil?

Good results! Thanks for sharing.

If the oil is changed at regular intervals or per OLM (also regular), it won't matter which brand that someone uses. Nor will it affect the potential for having an oil-burning engine. Simple, routine maintenance is all we can do.

Get you some real Rancho shocks and try those. Much different than the GM spec-built Rancho shocks that come from factory. Last truck I put on the Rancho 9000XL shocks. They are adjustable, but the 5000 and 7000 series are good as well.

The seats on the 2020+ trucks are extremely firm. The OP is not alone in this regard. I do not know of any complete seat replacement for these trucks. The hard seats and leaking rear slider issues are probably the biggest complaints of these trucks since they debuted. Ride is great, power is great, great features.

When changing oil, put in the required amount by the manufacturer, not what the dipstick says. Once this is done, then you have a level on the dipstick that you know is the true "full" mark.

Ford figured something out with the 23 update. They absolutely ride much better than previous generations. I went from a 2021 Silverado 3500HD High Country to a 2024 F-350 Lariat Tremor and the ride is much better. I was thinking tires, too, but others that have been in a 2023 or 2024 Super Duty say that they are smooth as well. One thing is sure, the GM seats suck and get worse with every generation or update.

The seats on my 2020+ HD trucks were extra firm. Now the seats on my Super Duty Lariat are very comfortable. Reminds me of my GMT-800. Even on longer trips, they aren't an issue.

The GM seats are super firm. To my surprise, they don't give in after several years. It was the first thing we all noticed when I test drove a Super Duty. Those seats are very comfortable. Reminds me of the GMT-800s.

Maybe in another decade or so........ That sucks. After having several leaky windows and replaced the last one with a solid window, there was still a slight drip. No where near the streams on each side from the cracked slider frame though. I now believe the cab structure at the window is weak as well, contributing to the window frame failures. I'm done with these trucks and their crap designs until they change it. Going on 6 years and it's still an issue... Guess it's like the AFM/DFM lifter failures that they ignore, too.

I can't answer about the 24 differences or improvements, etc. I can tell you the difference in Ford and GM seats. The Ford side and bottom bolsters are thicker, plusher and softer. The mid (seat and back) is very similar between Ford and GM, though Ford is a touch softer. The newer seats in GM are not near as comfortable as the GMT-800s. The ZR2 could indeed have more padding, or it could be just a different stitching to look that way.

Got tired of the crap repairs and had the window replaced with the solid glass. Hope this one will be trouble free for the life of the truck. I know I probably won't get another GM truck until the back window design is changed.

Anyone having issues with '23 or '24 year trucks? Wondering if any improvements have been made.

I replaced the OE tires a couple months ago and went with the new Goodyear Wrangler Duratrac RT. Slightly different tread than regular Duratracs, plus Kevlar for extra stability and puncture resistance. Very happy with the ride, noise and towing our fifth wheel.

You're quite welcome. I'm far from a diesel or emissions expert, but all I can offer is my personal experiences and opinions. I can only recommend you make the best decision for your uses and budget. I've been on both sides of that one, too! Some say work the crap out of modern diesels and some say to treat them like fine China. I say just use it normally like any other vehicle and do regular maintenance like any other vehicle. Crap can happen to anything and anybody.

I think the main thing is what the manufacturers have learned regarding emissions, their standards, and their equipment the use to control the emissions. Many have noted that DEF consumption has increased for all manufacturers the past couple years, and some have stated longer regen intervals. Much of that can vary depending on how the vehicle is driven. However, small changes in programming can help meet the ever increasing standards without a hardware change. Yes, I would be (and am) fine with the GM diesel. I think the Duramax, Powerstroke, and Cummins are all three good powerplants across the board. I also had good service from my L8T. I could go back to one and not think twice.

The CP4 hasn't been used in GM trucks since 2016. Since then, they have used a Denso fuel pump which has been a pretty good piece and reliable. I think you'll be fine with any L5P if you want a later model GM diesel truck. While the emission regulations are getting tighter and tougher, the issues are fewer and reliability better among all brands. That is good for the consumer, but does leave some doubt and hesitancy in buyers.

As some have read in the other thread, I sealed mine myself. On a previous truck, I had a dealer do the repairs and I ended up redoing that hack job that kept leaking. This time, all was done by me. No, I'm not going to keep doing it if it comes back. I'll either have a solid glass put in or I'll just get rid of it.

We've had a couple good rains since repair. So far, it's doing well. Time will tell how long it will hold. Either way, I've more faith in my own repair than the dealer again for this issue. I'm done with GM and their sliders until the design changes. If leaks return, either the truck is gone or a solid glass will be put in.

I recently repaired by leaking slider and posted in the 1500 section, but wanted to post here since many likely don't frequent the 1500 section if the only have HD trucks. I recently sealed my cracked, leaking rear slider. First, I took the headliner loose to about the middle of the cab. Then, I removed the spoiler and cleaned the roof and window frame with compressed air, water and then rubbing alcohol. I then applied AC Delco seam sealer along the top of the window frame all across. Let that sit for a day and then put 3M strip caulk on every bolt mounting surface and the 4 bolt holes on the ends. Once the spoiler was in place and nuts and bolts tightened, there was strip caulk sealing each side of every bolt and nut, as well as the 2 alignment pins. We've had some rain since and so far it is holding well. It wasn't a bad ordeal, but not something I want or will do on a regular basis. Too many other other choices of trucks to deal with this poor engineering, design and suppliers. Short of going to a glass company or body shop and having the fixed glass installed, this is good way to try to stop the leak yourself without going to the dealer and the aggravation of such. YMMV.

I recently sealed my cracked, leaking rear slider. First, I took the headliner loose to about the middle of the cab. Then, I removed the spoiler and cleaned the roof and window frame with compressed air, water and then rubbing alcohol. I then applied AC Delco seam sealer along the top of the window frame all across. Let that sit for a day and then put 3M strip caulk on every bolt mounting surface and the 4 bolt holes on the ends. Once the spoiler was in place and nuts and bolts tightened, there was strip caulk sealing each side of every bolt and nut, as well as the 2 alignment pins. We've had some rain since and so far it is holding well. It wasn't a bad ordeal, but not something I want or will do on a regular basis. Too many other other choices of trucks to deal with this poor engineering, design and suppliers. Short of going to a glass company or body shop and having the fixed glass installed, this is good way to try to stop the leak yourself without going to the dealer and the aggravation of such. YMMV.