Troubleshooting, Warranty & Recalls

911 topics in this forum

1. Tailgate wiring harness quick disconnect

   By James K, April 28, 2021
   • 2 replies
   • 15.8k views
   • 
   • James K
   • April 29, 2021

2. U1345 code Duramax

   By Klint, November 27, 2021
   • 2 replies
   • 10.1k views
   • 
   • mjm-1957
   • November 28, 2021

3. Service Trailer Brake System

   By Truston Gunter, December 4, 2023
   • 2 replies
   • 1.8k views
   • 
   • Truston Gunter
   • February 22, 2024

4. Electrical problem

   By joshua1221, June 5
   • 2 replies
   • 335 views
   • 
   • GMCustomerService
   • June 25

5. Radiator fan always spinning

   By Trailblaster, November 9, 2022
   • 2 replies
   • 2.1k views
   • 
   • newdude
   • November 9, 2022

6. Glitchy radio/infotainment system/screen

   By Pryme, September 9, 2022
   • 2 replies
   • 1.2k views
   • 
   • Pryme
   • November 29, 2022

7. TPMS life expectancy and or other issues????

   By Truston Gunter, May 16, 2022
   • 2 replies
   • 8.7k views
   • 
   • BB&Chiveon
   • May 17, 2022

8. Vertical keyless keypad

   By KDL, January 20, 2024
   • 2 replies
   • 1.1k views
   • 
   • Niklasbraun
   • January 25, 2024

9. 360 camera misalignment

   By Brougham96, April 29, 2021
   • 2 replies
   • 3.4k views
   • 
   • CT Chevy Connoisseur
   • April 29, 2021

10. Inner tail gate won't open

    By Ken Hill jr, November 28, 2021
    • 2 replies
    • 891 views
    • 
    • Ken Hill jr
    • November 30, 2021

11. Radio Update

    By djv1951, March 30
    • 2 replies
    • 517 views
    • 
    • djv1951
    • March 30

12. 2020 Sierra 2500HD Denali POS

    By Kuhns07, November 21, 2019
    • 2 replies
    • 4k views
    • 
    • Kuhns07
    • November 21, 2019

13. AC Port Location

    By Wmwbutler, November 1, 2024
    • 2 replies
    • 9k views
    • 
    • Wmwbutler
    • November 3, 2024

14. 2022 2500HD WT Wipers only work on Intermittent

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

15. 2024 GMC 2500 Denali hd

    By Jeff Dinsmore, September 25, 2023
    • 2 replies
    • 988 views
    • 
    • 64BAwagon
    • September 25, 2023

16. Air recirculate doesn't work with heater?

    By KuiMonster, November 17, 2020
    • 2 replies
    • 1k views
    • 
    • KuiMonster
    • November 18, 2020

17. 2024 GMC Sierra Denali Ultimate Dash and radio issues

    By JCraven, February 10, 2024
    • 2 replies
    • 5.8k views
    • 
    • Niklasbraun
    • March 5, 2024

18. Power Steering Growl

    By TeamSaris, March 28, 2024
    • 2 replies
    • 990 views
    • 
    • TeamSaris
    • March 29, 2024

19. 2500 Bedlights on w/o mirror lights?

    By Mass2500HD, December 29, 2022
    • 2 replies
    • 1.2k views
    • 
    • Mass2500HD
    • December 29, 2022

20. Window doesn't work after dead battery

    By insidethreat07, November 4, 2021
    • 2 replies
    • 10.7k views
    • 
    • insidethreat07
    • November 4, 2021

21. Trailering app defaults to "Guest trailer"

    By Brummie99, March 26, 2025
    • 2 replies
    • 1k views
    • 
    • Brummie99
    • March 26, 2025

22. The unexpected programing updates during service visit

    By Michael621, February 25, 2023
    • 2 replies
    • 2k views
    • 
    • Michael621
    • February 25, 2023

23. Trailering App Gremlins

    By Tomato, May 17, 2020
    • 2 replies
    • 1.3k views
    • 
    • Tomato
    • June 2, 2020

24. 2020 GMC3500 AT4 needing to replace DPF at 85K miles

    By Hog Hunter, May 27, 2025
    • 2 replies
    • 869 views
    • 
    • CamGTP
    • May 28, 2025

25. Never greased

    By mkeddie, October 25, 2020
    • 2 replies
    • 1.6k views
    • 
    • ickyoldman
    • October 25, 2020