2020-2024 Silverado HD & Sierra HD Troubleshooting

717 topics in this forum

1. Trailer light pre departure check

   By dquest, September 4, 2021
   • 4 replies
   • 877 views
   • 
   • dquest
   • September 11, 2021

3. 2020 2500HD Transmission issues 1 2 3

   By gpraceworks, November 16, 2019
   • 43 replies
   • 43.7k views
   • 
   • Scott Wedge
   • September 9, 2021

4. 2021 gmc 3500hd srw 4x4 6.6l gas

   By Zani Koxha, August 31, 2021
   • 1 reply
   • 883 views
   • 
   • GMC4Zee
   • September 8, 2021

5. 2020 Chevy 3500 - Remote start sound issue

   By Rguerra, July 21, 2021
   • 5 replies
   • 1.4k views
   • 
   • Rguerra
   • September 8, 2021

6. How to determine if new truck is being built 1 2 3

   By dquest, July 24, 2021
   • 30 replies
   • 6.7k views
   • 
   • dquest
   • September 3, 2021

7. Why So Many?

   By hdhp, August 31, 2021
   • 1 reply
   • 792 views
   • 
   • Another JR
   • September 1, 2021

8. Homelink won’t program to Liftmaster Security 2.0 remote 2021 Denali HD

   By Ron Scott, August 27, 2021
   • 2 replies
   • 2.1k views
   • 
   • Grjfer
   • August 28, 2021

9. Rear bearing noise on 20k miles Sierra 3500HD🤯

   By Darius Manikas, August 26, 2021
   • 0 replies
   • 616 views
   • 
   • Darius Manikas
   • August 26, 2021

10. 2021 6.6 Gas Temp Gage always pegged at 220 normal?

    By ILSilverado, August 21, 2021
    • 3 replies
    • 970 views
    • 
    • mrjulian416
    • August 25, 2021

11. Duramax Engine temps while heavy towing

    By rblanch, August 23, 2021
    • 0 replies
    • 702 views
    • 
    • rblanch
    • August 23, 2021

12. Reduced power warning, engine light on

    By Rxgolfer, August 14, 2021
    • 2 replies
    • 3.1k views
    • 
    • Tomato
    • August 21, 2021

13. 4G LTE, icon vanished on 8 inch infotainment

    By don penney, August 13, 2021
    • 3 replies
    • 1.9k views
    • 
    • don penney
    • August 17, 2021

14. 2021 Duramax issues, less than a week old.

    By Joe_Lee, December 26, 2020
    • 10 replies
    • 15.3k views
    • 
    • K3500WT
    • August 16, 2021

15. 2021 gmc 3500hd srw 4x4 let rear end

    By Zani Koxha, August 14, 2021
    • 1 reply
    • 819 views
    • 
    • Another JR
    • August 15, 2021

16. Sirius recording random channels

    By Gill998, August 13, 2021
    • 0 replies
    • 505 views
    • 
    • Gill998
    • August 13, 2021

17. GM Issues Service Update For Chevy Silverado HD, GMC Sierra HD Over TCM Calibration (2020 models)

    By iflypigs, August 11, 2021
    • 0 replies
    • 1.7k views
    • 
    • iflypigs
    • August 11, 2021

18. Upper Steering Shaft replacement - 2020 HD

    By jeez, February 6, 2021
    • 11 replies
    • 11.6k views
    • 
    • JCunningham
    • August 10, 2021

19. 3rd revision steering Intermediate shaft released. part # 85123355

    By JCunningham, August 10, 2021
    • 1 reply
    • 2.5k views
    • 
    • silveradosid
    • August 10, 2021

20. Trouble with autostart, remote and app.

    By KuiMonster, August 6, 2021
    • 1 reply
    • 396 views
    • 
    • katoom
    • August 7, 2021

21. Drivers Side Wide Angle Lower Mirror ?

    By GhostComanche, July 14, 2021
    • 7 replies
    • 1.5k views
    • 
    • KuiMonster
    • August 7, 2021

22. 2020 Denali 3500 wont start

    By Duallyboy26, September 10, 2020
    • 11 replies
    • 3.4k views
    • 
    • Richinatlanta
    • August 5, 2021

23. 4 issues to be resolved 1 2

    By kylant, May 19, 2021
    • 15 replies
    • 3.3k views
    • 
    • Grjfer
    • August 1, 2021

24. Can you bolt/secure an item to the center console hump in a 2020 Silverado?

    By safetykirk, July 16, 2021
    • 1 reply
    • 642 views
    • 
    • JCunningham
    • July 23, 2021

25. 3.5" RC Lift 2" Rear blocks instead of 2.5"?

    By Brett Balcaen, July 20, 2021
    • 0 replies
    • 477 views
    • 
    • Brett Balcaen
    • July 20, 2021

26. Multi-Pro Tailgate Loose?

    By RugbyRef, July 14, 2021
    • 5 replies
    • 5.1k views
    • 
    • Grjfer
    • July 19, 2021