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  1. New Member Introductions
    When I am towing most of the time I will get this high engine whine that will happen then go away. No rpm change but the change in sound. Best ways for putting videos on here?
  2. 2017 - '19 (Non Powertrain)
    I have a 2019 2500HD WT with manual mirrors and I’m wanting to upgrade to power fold. Haven’t removed door panel so I’m not sure if the harness is in the door and just not used or if GM stopped doing that. If it’s possible any help or info is appreciated. Thanks!
  3. Towing & Hauling
    New here but have been following for awhile. Anyway, I just got a hard to find 2023 3.0 with the max trailering package. I’m from ND and had to get it north of the cities. Not many around here. Anyway, I have a 33 ft travel trailer which loaded is around 8k or 7200 dry about. It gets windy up...
  4. RV Towing Trips & Tech Tips...
    Just wanted to share my experience with ST235/80R16E Castle Rock tires. Came OEM on a 2021 XLR Boost 37TSX13. 5W has about 10K miles on it. Pulling it with a 2015 3500HD Sierra. One month ago I went to check on my 5W in storage and found the front passenger tire blown out. RV was still under...
  5. General Discussions
    Greetings Ya'll Truck is a 2021 Silverado 1500 LTZ Duramax CC medium box. Couldn't find any discussion on something similar to my experience and am hoping someone here has insights. I mostly haul a 7,000lb trailer and the shudder started to appear ~24,000 miles, now at 30,236; of these miles...
  6. General Discussions
    I have a 2008 Duramax, everything on the drive train is stock, only aftermarket are my rims (18 inch) and tires (275/65/18). Last summer When I towed a 13-14k pound trailer uphill (Cuesta grade in California) the engine temp climbed to max and wouldn’t cool down. There was no where to pull over...
  7. Aftermarket Mods.
    2023 Chevy 3500HD DRW I am looking into installing an airlift suspension kit but am confused on what I should do as far as the front end. My over all goal is to get some 35/12.50r22 on the truck, achieve a great ride while hauling, and making a nice looking truck I am also looking @ Cognito...
  8. Towing & Hauling
    Hello, I have a 2008 LMM And I was towing my trailer in the Nevada mountains. Nothing extreme… my trailer was probably around 7000-7500lbs. Truck has 200k on it and when I was towing, my ECT got up to 230 degrees and so did my trans temp. My thermostats are about 1.5 years old so they’re still...
  9. Towing & Hauling
    We just traded in a 2013 3500 Silverado for a 2021 Denali 2500 to tow our 38 ft, 5th wheel toy hauler. The newer truck has more gears, driving mode selections, and features, so I would like to hear some opinions on driving in mountain grades. With the 3500, I would slow to 50-55 at the top of...
  10. Towing & Hauling
    Within the next year I’m looking to replace my old truck with a newer 3500/350 diesel truck. I intend to use it for hauling hay and cattle with a gooseneck trailer. Max tow load would be about 20K lbs. I have been intending to go with the Duramax 3500 because of the Allison transmission and the...
  11. 2020+ (Non Powertrain)
    Hello everyone! Today I have a very generic question about the newest L5P trucks. Currently I have an 06 LBZ ZF6 CC/SB and she is in very clean condition. Don't lose your minds I am not gonna get rid of it! She will be mine for many years to come.👍 I am looking to purchase a new dually to tow...
  12. RV Towing Trips & Tech Tips...
    Looking at buying a 5th wheel RV but truly confused on weight that we can haul. We would love to use our existing 2005 Silverado 2500 HD 6.6 L Duramax Turbo Diesel with 5 speed Allison transmission. I have been researching trying to come up with the max weight that we can haul. We are the...
  13. Towing & Hauling
    I have been doing my Research on this truck for a while now, but maybe it’s the lack of not knowing. I have a B&W gooseneck hitch already installed in the truck I’m trying to find the max pin weight that I could put in the back? Looking at buying a toy hauler? If anybody could give there opinion...
  14. Transmission Shop
    Hey guys the time has come for a new transmission in my 2006 crew cab long bed 3500 srw lbz. My local diesel shop is a dealer for the wcfab transmissions and quoted me for $6300 installed and ready to drive (750hp). I plan on doing injectors (most likely 60% and have them turned down a bit) and...
  15. Towing & Hauling
    Hello everyone, Had to jump on a forum to help wrap my mind around my tow ratings and selecting a trailer. I understand GCWR, GVWR, TW, etc. and have done a lot of towing with my old half tons. I recently purchased a 2020 2500 with plans of towing campers, flatbeds, and more in the future. I...
  16. General Discussions
    I’ve got a 2007.5 gmc 3500 welding rig that I use to pull my 5th wheel camper and on my journey back home from pa to Arkansas I’ve blew 2 wheels out. It’s always on the passenger inside dual. In the last 2 years I have went through 7 wheels on that same spot. Any suggestions to why this would be...
  17. 01-04.5 LB7 Duramax Powertrain
    I've read through most of the threads from others having towing issues but haven't quite seen my problem. For reference my truck is 01 gmc 2500hd stock other than a 4 inch exhaust and an intake. Last year I had issues with the truck going into limp mode when hauling a trailer and normally only...
  18. General Discussions
    Was in process of replacing factory hitch. The 21 mm bolt that runs through the hitch, bumper bracket & bottom side of frame rail were seized up. So they got the cutting torch. Now I need to replace the 21 mm bolt & the weldnut/capture nut. Cannot find anything out there on this. Does anyone...
  19. Performance Upgrades
    Hey everybody, Newest guy in the diesel ranks trying to learn about the bully dog that came with my used 01 dmax. Tryin figure out what to set it to for best economy?? I know their are alot of different schools of thought here. Also, will the extreme setting tear up the crankcase if I am light...
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