Troubleshooting, Warranty & Recalls

911 topics in this forum

1. 2020 2500HD Silverado Feels like its surging when towing uphill

   By Addison Reeder IV, November 9, 2020
   • 4 replies
   • 3k views
   • 
   • kylant
   • November 20, 2020

2. 2020 2500HD Transmission issues 1 2 3 4

   By gpraceworks, November 16, 2019
   • 45 replies
   • 57.6k views
   • 
   • GMCustomerService
   • September 9, 2024

3. 2020 2500HD WT 2k Update - Issues

   By CT Chevy Connoisseur, July 31, 2020
   • 1 reply
   • 1.3k views
   • 
   • airwolf912
   • August 4, 2020

4. 2020 2500HD WT Duramax Terrible Rear Sway

   By Lightenup, May 9, 2020
   • 10 replies
   • 8.2k views
   • 
   • Maninthesea
   • November 21, 2022

5. 2020 3500 AT4, second limp mode event in 8 months - could use some advice

   By blamkin86, August 2, 2023
   • 1 reply
   • 1.6k views
   • 
   • blamkin86
   • August 2, 2023

6. 2020 3500 cab chassis

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

7. 2020 2020 3500 denali snowmobile deck lights turn off with brake or signal

   By Ryan Evans, October 29, 2019   

   • l5p duramax
   • trailer
   • (and 3 more)

     Tagged with:

     • l5p duramax
     • trailer
     • sled deck
     • marlon
     • New so wtf
   • 7 replies
   • 7.6k views
   • 
   • dakota42000
   • December 10, 2024

8. 2020 3500 Diesel DRW HC Pkge. Please Toyota-Make the Big Trucks!

   By Bhop56, February 21, 2020
   • 11 replies
   • 2.4k views
   • 
   • Thomas E
   • May 13, 2020

9. 2020 3500 Duramax dually emergency brake and park assist issues

   By Pfc1, February 24, 2025
   • 1 reply
   • 601 views
   • 
   • GMCustomerService
   • February 27, 2025

10. 2020 3500 outside thermometer not even close

    By bodenwell, March 11, 2025
    • 3 replies
    • 627 views
    • 
    • GMCustomerService
    • March 12, 2025

11. 2020 3500HD - dead fuel pump module

    By greatmizzou, December 30, 2025
    • 3 replies
    • 688 views
    • 
    • greatmizzou
    • April 26

12. 2020 3500HD Long bed Gooseball

    By Gr8DaneOperator, August 10, 2020
    • 2 replies
    • 1.2k views
    • 
    • Kyle Royston
    • August 28, 2020

13. 2020 6.6 gas rough idle at start

    By greatmizzou, February 28, 2020
    • 5 replies
    • 8.5k views
    • 
    • greatmizzou
    • March 16, 2021

14. 2020 6.6 Liter Gas Engine Problems 1 2

    By Bill Shaffer, April 5, 2021   

    • 2500HD
    • 6.6l gas
    • (and 1 more)

      Tagged with:

      • 2500HD
      • 6.6l gas
      • silverado 2500hd
    • 23 replies
    • 102.4k views
    • 
    • Joseph Alvarado
    • December 19, 2023

15. 2020 AT4 HD parking sensors and blind spot not working

    By Wellarmedlamb, April 16, 2023
    • 5 replies
    • 8.1k views
    • 
    • Wellarmedlamb
    • May 11, 2023

16. 2020 Chevrolet 2500 hd electronic and ac problems

    By Kyle Prater, June 4, 2023
    • 0 replies
    • 1.9k views
    • 
    • Kyle Prater
    • June 4, 2023

17. 2020 Chevy 3500 - Remote start sound issue

    By Rguerra, July 21, 2021
    • 6 replies
    • 3.1k views
    • 
    • jbu81
    • January 7, 2025

18. 2020 Chevy 3500HD 6.6l GAS starting problem

    By Ashleet, June 26, 2021
    • 4 replies
    • 12.4k views
    • 
    • GMCustomerService
    • July 22, 2022

19. 2020 Chevy gas harsh downshift 1 2

    By Nathan Leslie, February 24, 2020
    • 18 replies
    • 21.8k views
    • 
    • GMCustomerService
    • November 28, 2022

20. 2020 Chevy Silverado 1500 pickup

    By Marla Herman, March 18, 2021   

    • 4WD off
    • 1 reply
    • 674 views
    • 
    • TrailBoss1
    • March 19, 2021

21. 2020 Chevy2500hd DEAD

    By Justin Overby, March 15, 2020
    • 5 replies
    • 1.8k views
    • 
    • TJMCODE
    • March 23, 2020

22. 2020 DEF tank replacement with Updated re-pin

    By Agez06, April 11, 2022
    • 0 replies
    • 2.1k views
    • 
    • Agez06
    • April 11, 2022

23. 2020 denali 3500 camera

    By Bruce Riley, July 27, 2020
    • 2 replies
    • 909 views
    • 
    • Gecko50
    • July 31, 2020

24. 2020 Denali 3500 Dually with 6 trailer TMPS

    By Gecko50, August 1, 2020
    • 5 replies
    • 6.6k views
    • 
    • Mbower2020
    • December 18, 2020

25. 2020 Denali 3500 wont start

    By Duallyboy26, September 10, 2020
    • 11 replies
    • 5.9k views
    • 
    • Richinatlanta
    • August 5, 2021