Troubleshooting, Warranty & Recalls

912 topics in this forum

1. Changed Batteries and have reduced power and more.

   By Mattic33, January 10, 2023
   • 2 replies
   • 1.1k views
   • 
   • GMCustomerService
   • January 20, 2023

2. Bluetooth disconnect and phone call crackling on 2025 GMC Sierra

   By Bob Sales, December 25, 2024
   • 2 replies
   • 1.7k views
   • 
   • BuckWallace
   • December 26, 2024

3. Side detection temporarily unavailable

   By Irish80, October 8, 2019
   • 2 replies
   • 22.7k views
   • 
   • Dhamilton07
   • September 17, 2024

4. Strange popup on screen when starting up

   By GMC4Zee, May 13, 2022
   • 2 replies
   • 1.8k views
   • 
   • shadow gray 2020 hd
   • June 6, 2022

5. 2020 Silverado 2500HD turn signal hyperflashing

   By arundelglass, February 25, 2024
   • 2 replies
   • 2.6k views
   • 
   • Niklasbraun
   • February 27, 2024

6. Trailer Light Issues

   By Bryan Stiers, March 27, 2020
   • 2 replies
   • 1k views
   • 
   • mkeddie
   • March 27, 2020

7. Forgetful truck: Settings randomly changing/reverting

   By UWSkier, December 1, 2023
   • 2 replies
   • 843 views
   • 
   • macattack64
   • December 11, 2023

8. Trailer TPMS sensors?

   By Hank B, January 17, 2021
   • 2 replies
   • 955 views
   • 
   • Hank B
   • January 17, 2021

9. 2021 Sierra Trailer Brake Problems

   By Whip, April 19, 2024
   • 2 replies
   • 2.7k views
   • 
   • bruceb58
   • December 30, 2024

10. Clunking Nosie Letting off gas pedal

    By sstoner911, April 19, 2024
    • 2 replies
    • 1.7k views
    • 
    • sstoner911
    • May 7, 2024

11. Headlight flash/wiper hesitation

    By BuckWallace, December 8, 2025
    • 2 replies
    • 320 views
    • 
    • BuckWallace
    • December 8, 2025

12. Squeaking Brake pedal

    By Dan Secor, December 10, 2020   

    • squeaking
    • brake pedal
    • (and 1 more)

      Tagged with:

      • squeaking
      • brake pedal
      • annoying
    • 2 replies
    • 3.3k views
    • 
    • Jsdirt
    • December 13, 2020

13. 2020 3500 cab chassis

    By jmccduramax, March 22, 2021
    • 2 replies
    • 849 views
    • 
    • jmccduramax
    • March 22, 2021

14. 7 pin plug

    By JimBuck, October 30, 2020
    • 2 replies
    • 1.1k views
    • 
    • ssowie
    • October 31, 2020

15. Need Part # and/or name for 7 way plug in the bed

    By es2020HD, June 21, 2020   

    • 7-way plug
    • bed plug
    • 2 replies
    • 3.3k views
    • 
    • es2020HD
    • June 21, 2020

16. Infotainment/weather ?

    By Cheekster96, August 2, 2022
    • 2 replies
    • 1.3k views
    • 
    • Cheekster96
    • August 2, 2022

17. Truck not sitting level

    By Christopher Murphy, January 5, 2020
    • 2 replies
    • 2.3k views
    • 
    • Christopher Murphy
    • January 21, 2020

18. Tailgate dampener failure?

    By Pryme, May 22, 2023
    • 2 replies
    • 1.2k views
    • 
    • Jettech1
    • May 23, 2023

19. 2020 GMC Sierra 2500HD Towing Mirrors

    By Mrzacharrr, February 15, 2022
    • 2 replies
    • 5k views
    • 
    • redwngr
    • March 1, 2022

20. 2020 2500HD LT running lights

    By Greg Nelson, December 26, 2023
    • 2 replies
    • 2.7k views
    • 
    • carkhz316
    • December 29, 2023

21. Bad U-Joint??

    By VNM28, February 8, 2021
    • 2 replies
    • 4.1k views
    • 
    • VNM28
    • February 9, 2021

22. Keyfob #2 is the default...how do I switch it to default to Keyfob #1?

    By RWA007, February 15, 2022
    • 2 replies
    • 1.1k views
    • 
    • RWA007
    • March 3, 2022

23. 2022 headlight fog or condensation

    By CHIp070, January 18, 2024
    • 2 replies
    • 5.9k views
    • 
    • fvoors
    • October 9, 2024

24. Trailer TPMS sensors not reading intermitantly

    By Andrew Best, October 6, 2020   

    • TPMS trailer
    • Tpms problems
    • (and 1 more)

      Tagged with:

      • TPMS trailer
      • Tpms problems
      • Repeater TPMS
    • 2 replies
    • 2.6k views
    • 
    • Mbower2020
    • December 18, 2020

25. OBD2 circuit, need to locate fuse.

    By JLeosnow, November 18, 2024
    • 2 replies
    • 11k views
    • 
    • JLeosnow
    • November 18, 2024