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Just installed an S&B cold air intake #75-5103D with the (white) Dry extendable filter. Got it on amazon for 399$ same price as the S&B website , but shipping took 2 days with prime , S&B wanted 40$ to ship it standard. Installation was easy , and it looks really nice under the hood in my opinion, but better yet I can definitely hear the turbo whistle even more than stock. I still have the DPF and the catalytic behind the turbo so its not a nice full flowing whistle , but its loud enough to make me smile lol. Just wanted to create this thread for those with a Duramax (L5P) that were wondering on this CAI. I recommend It, I know is pricey , but most mods to these truck are. LMK if you have any questions ??

I've checked out a few threads on here trying to find a similar noise to what I've been dealing with but either haven't dug deep enough, or haven't found one making the right noise. Started about 3 months ago and periodically gets better than worse again, but notice it the most on hot days. Started with only doing this around 50-55 mph but has since progressed to starting right after it shifts through each gear. No codes, no real changes in driving quality (hot days a little sluggish), more so it's just annoying. The groaning seems to be coming from the passenger side somewhere but I haven't been able to pinpoint exactly where. I've had some people throw me ideas such as injectors, torque converter, heat shield vibrations, all sorts of things from all over the truck, so I'm at a loss with even the slightest idea of what it could be. Been running Diesel Kleen through it just about every other fill up and I'd say there is some difference, not enough for me to say it makes it smooth out. Link is a not super great video from a few weeks ago of said sound

New to the this forum but a seasoned vet on others. I’m posting to see if anyone else is having brake issues after the TSB for the brakes on the 3500 L5P. If not to keep an eye out. Long story short, we just finished a 12 day camping trip up the coast of California. On the last day we headed home which is 4 hours away pulling our 5th wheel. (2023 Momentum 395M). 30 minutes from home, We were getting on the interchange and noticed some clear white smoke corresponding with my break pumps. On the third pump I lower my trailer breaks thinking it was set too high cause of the steep grades. Pumped again and that’s when I got a steady white smoke. Pulled over right away and inspected to find fluid leaking in front of the driver rear tire and a small fire. First thing I do is shut off the truck. Run around and get my wife out of the truck so we can kids and dogs out. As I turn around my 4 year is strapped in his car seat with flames all up the rear door and back glass. It happened so slow and fast at the same time. All I could think about is that glass breaking and the oxygen sucking the flames in and watching my son burn to death in front of my eyes and I can’t do a damn thing. I did indeed get him out and the family in to the trailer. We were stuck in what I call the kill box now. It’s 2 major freeways that interchange in to a 2 lane highway with at least 1/4 of concrete barrier on both sides with no turn outs not too much further up. We were lucky to stop where we where. We tried to put out the fire out with 4 extinguishers between the truck driver, tow truck driver and myself with no anvil. At this point I have to either get my family out of the trailer or unhook and try to drive off. Well ….. we were able to unhook. Jumped in the truck knowing turning on the fuel pump was a terrible idea. The thought of my family sitting on the upper deck on top of 2 propane bombs under them just gave me the push I needed to commit. Turned her on and floored it. The truck had exploded with me in it. I still remember seeing the flames all around, the heat and smoke in the cab. I was able to exit the vehicle after that excess fuel to burn off. I suspect that the initial fire started on the passenger rear and moved to the driver rear. As there are tire stamps from the right rear some something hot, melting or leaking for over 80 feet. Where I stopped first. You could see that it was leaking where the tires would be. Puddle is wet on the right side and the left is burned. if fuel was leaking, there would be a fuel burn line or fire. This is what I think happened but we will have to wait and see what the experts say. We are very fortunate that there were no injury or fatalities. Insurance company has taken custody of the truck and investigation is pending. I only have 17k left on the loan and had 15k of parts and labor in to it. Mods were as follows. 35x12.5 wrapped on 20” Fuel Triton wheel, K&N drop in filter, S&B 62 gallon fuel tank, Retrax hard roll up bed cover, B&W 5th wheel hitch and custom mudflaps. All I know is that I almost lost my family, trailer and truck that I’m most likely going to lose on. 3500 was purchased certified used last June around 14,000 miles and burned down last Thursday with about 16k on it. Now the adrenaline and shock has worn off. The anger and ptsd is kicking in. We wouldn’t have gotten out with our skin suits with out the help of the kings if all kings …God, the 2 Good Samaritan and our great first responders. In the end of the day I have my family and health and thankful for that. I’ll be posting my outcome, as soon as I hear back and case is closed.

I have a 2019 L5P with 72k on it. Bought it last June from a dealership with 51k on it. Few months ago, I tried to go get it aligned at a Big O and was told they couldn't do it because it needed new pitman, idler, and inner tie rods. Got it on the lift few days later and decided pitman and idler were getting replaced, but tie rods didn't seem bad. Bought the parts, took it to a reputable shop, and had them replace them and align it. They scoped out the tie rods and agreed they weren't bad. Fast forward to a week ago, truck is out of alignment again and has slowly been getting worse. I have play in my steering wheel, rides rough, and discovered today that my ball joint on my driver side lower control arm is leaking grease. Once again checked my tie rods and still mechanically appear fine. I won't lie, I do not know all there is to know about these trucks, and I've been learning as I go. With all this being said, I'm looking for any information, any tips, any things to look for, or even common problems that I may need to look out for in the future. I'm on my own trying to figure this all out and the only thing most other shops do around here is treat me like a dumb blonde chick. Last shop I took it to is booked out now for over a month or I'd go back there. Any help would be greatly appreciated.

2018 Chevy 2500 LT. Unfortunately going back to shop for second time. Thank God I have warranty. Going for emissions related problems. First time Coolant reservoir need replaced. Also noticed that none of my mirror lights work. I'm wondering if this an issue I could fix myself easily? Led backup lights also wont turn on even when I turn on bed light and put in reverse. I hope warranty doesn't give me trouble. I did not have a problem the first time with warranty. But with this "Service Emissions System:. Along with lights not working in mirrors. And to top it off I must have some sort of short where license plate bulbs are at. Plate lights wont stay on even with new bulbs.

Coming home from a four-hour trip Sunday towing a small utility trailer, my truck dropped to idle while at speed on the interstate just a few miles from home. I was lucky and able to pull over to an exit ramp with zero power. While coasting the display popped up saying reduced power for a couple of seconds and the engine light came on. While still on the exit, all power restored, message went away, and I was able to make it home on back roads. While it was still running I pulled three codes: P0087, P129F and P228B. Cut it off, unloaded everything and then went to move the trailer. It turned over for a few seconds then busted off (longer than normal). As soon as I put it in gear it shut off. Got it to the dealership and awaiting the results. Truck only has 1,404 miles on it and was delivered from Flint a few weeks ago. All displays read fine, fuel filter, DEF fluid, etc. Engine light still on. Just FYI to add to the list of L5P problems