Troubleshooting, Warranty & Recalls

919 topics in this forum

1. Outside Temperature Reading High Consistently

   By AT4X Steve, November 7, 2025
   • 0 replies
   • 216 views
   • 
   • AT4X Steve
   • November 7, 2025

2. 2025 3500 LTZ air conditioning slow to start cooling

   By vucelick, September 2, 2025
   • 4 replies
   • 1.2k views
   • 
   • UltimateToolReviews
   • November 6, 2025

3. Cabin Temperature Control Issues?

   By AndrewF, October 3, 2025
   • 4 replies
   • 604 views
   • 
   • UltimateToolReviews
   • November 6, 2025

4. Front Park Assist AEV Bumper

   By JW2024, May 14, 2025
   • 4 replies
   • 833 views
   • 
   • JW2024
   • November 2, 2025

5. Wipers work intermittently on their own

   By sigmonster, August 25, 2025
   • 11 replies
   • 1.3k views
   • 
   • JW2024
   • October 30, 2025

6. Advice: Do Not Buy a 2024 HD Truck 1 2

   By Rabbittown, November 28, 2023
   • 24 replies
   • 38.6k views
   • 
   • revrnd
   • October 30, 2025

7. Adaptative cruise control 1 2 3

   By Homer1959, September 9, 2025
   • 36 replies
   • 3.2k views
   • 
   • Dunn
   • October 10, 2025

8. 2024 Brake controller Problems 1 2 3 4 16

   By Curt Lowe, May 10, 2023
   • 229 replies
   • 107.2k views
   • 
   • mjonesjr84
   • October 9, 2025

9. 2025 2500 Brake Controller Disconnecting 1 2

   By mjonesjr84, September 7, 2025
   • 20 replies
   • 3.3k views
   • 
   • Jacejr66
   • October 6, 2025

10. Fuel filter reset

    By Irish80, December 18, 2019
    • 10 replies
    • 62.5k views
    • 
    • Bill Lemmond
    • October 2, 2025

11. Multimatic Mount Bolt Torque

    By JW2024, September 18, 2025
    • 0 replies
    • 203 views
    • 
    • JW2024
    • September 18, 2025

12. Uncommanded attempt to shift to 4-LO at highway speed. WTF?

    By NWStever, September 3, 2025
    • 4 replies
    • 594 views
    • 
    • NWStever
    • September 9, 2025

13. Radio Fuses

    By michaels2408, August 30, 2025
    • 2 replies
    • 4.1k views
    • 
    • michaels2408
    • August 31, 2025

14. Tailgate - Not receiving notification for main Tailgate Open

    By Pete M, June 4, 2025
    • 3 replies
    • 777 views
    • 
    • Pete M
    • August 18, 2025

15. 6L90E (gas truck) 2-1 downshift CLUNK 1 2 3

    By Epsilon Plus, September 3, 2022
    • 35 replies
    • 21.9k views
    • 
    • AmericanPie
    • August 17, 2025

16. Truck automatically turns down AC fan when I get a phone call.

    By No F-bdy Bs, August 11, 2025
    • 14 replies
    • 3.8k views
    • 
    • EXSlider400
    • August 16, 2025

17. 6.6 Gas Oil Consumption/leak Question 1 2

    By UltimateToolReviews, August 7, 2025
    • 15 replies
    • 1.5k views
    • 
    • UltimateToolReviews
    • August 9, 2025

18. Suspension Clunk

    By Faffy, July 29, 2025
    • 2 replies
    • 463 views
    • 
    • Another JR
    • July 30, 2025

19. Fan speed doesn’t return after CarPlay phone call

    By EXSlider400, July 28, 2025
    • 5 replies
    • 668 views
    • 
    • EXSlider400
    • July 29, 2025

20. Transparent trailer won't calibrate 1 2 3

    By Topath, June 27, 2023
    • 41 replies
    • 19.9k views
    • 
    • Dustin Marshall
    • July 20, 2025

21. Dually TPMS Sequence

    By angel ullom, July 12, 2025
    • 2 replies
    • 886 views
    • 
    • angel ullom
    • July 17, 2025

22. Dash or firewall rattle 6.6L gasser at stoplights 1 2

    By UWSkier, December 18, 2024
    • 19 replies
    • 3.1k views
    • 
    • Chuck FB
    • July 15, 2025

23. 2024 LTZ Turn signal intermittently triggering wipers

    By davidm767, July 8, 2025
    • 2 replies
    • 863 views
    • 
    • BuckWallace
    • July 8, 2025

24. 2025 6.6 duramax oil leak

    By vucelick, July 7, 2025
    • 0 replies
    • 586 views
    • 
    • vucelick
    • July 7, 2025

25. 2024 6.6 Gas Misfire

    By transam617, January 26, 2025
    • 9 replies
    • 5.5k views
    • 
    • lineman1234
    • July 1, 2025