Troubleshooting, Warranty & Recalls

910 topics in this forum

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

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

2. Radio Fuses

   By michaels2408, August 30, 2025
   • 2 replies
   • 3.5k views
   • 
   • michaels2408
   • August 31, 2025

3. Tailgate - Not receiving notification for main Tailgate Open

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

4. 6L90E (gas truck) 2-1 downshift CLUNK 1 2 3

   By Epsilon Plus, September 3, 2022
   • 35 replies
   • 21.1k views
   • 
   • AmericanPie
   • August 17, 2025

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

   By No F-bdy Bs, August 11, 2025
   • 14 replies
   • 2.7k views
   • 
   • EXSlider400
   • August 16, 2025

6. 6.6 Gas Oil Consumption/leak Question 1 2

   By UltimateToolReviews, August 7, 2025
   • 15 replies
   • 1.3k views
   • 
   • UltimateToolReviews
   • August 9, 2025

7. 2022 2500HD WT Wipers only work on Intermittent

   By Wraith04, December 6, 2023
   • 2 replies
   • 4.3k views
   • 
   • Sum
   • August 3, 2025

8. Suspension Clunk

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

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

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

10. Transparent trailer won't calibrate 1 2 3

    By Topath, June 27, 2023
    • 41 replies
    • 19.1k views
    • 
    • Dustin Marshall
    • July 20, 2025

11. Dually TPMS Sequence

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

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

    By UWSkier, December 18, 2024
    • 19 replies
    • 3k views
    • 
    • Chuck FB
    • July 15, 2025

13. 2024 LTZ Turn signal intermittently triggering wipers

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

14. 2025 6.6 duramax oil leak

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

15. 2024 6.6 Gas Misfire

    By transam617, January 26, 2025
    • 9 replies
    • 5k views
    • 
    • lineman1234
    • July 1, 2025

16. Rear Window Leak (with fix)

    By UltimateToolReviews, June 22, 2025
    • 7 replies
    • 3.1k views
    • 
    • carkhz316
    • June 29, 2025

17. Trailer TPMS Issues

    By Scott Surges, June 4, 2025
    • 9 replies
    • 1.5k views
    • 
    • PBNB
    • June 28, 2025

18. Windshield Replacement

    By marpel, June 15, 2025
    • 5 replies
    • 973 views
    • 
    • Chuck FB
    • June 21, 2025

19. Bluetooth crackling/static after Y172 update 1 2 3

    By BuckWallace, September 22, 2024
    • 40 replies
    • 12.6k views
    • 
    • vucelick
    • June 21, 2025

20. auxillary (block) heater plug in

    By Lke, June 7, 2025
    • 5 replies
    • 1.1k views
    • 
    • redwngr
    • June 12, 2025

21. Anyone know how to replace the triangle shaped front window apliques?

    By Meyre1, June 7, 2025
    • 1 reply
    • 736 views
    • 
    • tbarn
    • June 9, 2025

22. GM Buy Back

    By DBaker, June 4, 2025
    • 5 replies
    • 1.2k views
    • 
    • customboss
    • June 6, 2025

23. Belt squeal (?) on cold start up on 2024 Chevy 2500HD 6.6L Gasser 1 2 3 4

    By gastrohman, March 11, 2024
    • 51 replies
    • 15.5k views
    • 
    • Ry Guy
    • June 5, 2025

24. 5th wheel chucking 1 2 3

    By Meade2024, February 11, 2025
    • 31 replies
    • 5.1k views
    • 
    • Randal Scott
    • June 5, 2025

25. TRAILERING APP WON'T TURN ON

    By BnDRoadTrip, February 6, 2024
    • 1 reply
    • 926 views
    • 
    • riggone
    • June 4, 2025