2020-2024 Silverado HD & Sierra HD Troubleshooting

789 topics in this forum

1. 2021 Sierra 2500 shake when hitting bumps

   By Lawyered1989, August 10
   • 2 replies
   • 398 views
   • 
   • Lawyered1989
   • September 18

3. Flexride

   By lookingatgmagain, March 15
   • 3 replies
   • 1.3k views
   • 
   • LouLockman
   • September 18

4. Side detection temporarily unavailable

   By Irish80, October 8, 2019
   • 2 replies
   • 18.8k views
   • 
   • Dhamilton07
   • September 17

5. 2021 3500 Denali "Service Side Detection System" warning

   By Nick Taylor, March 18
   • 3 replies
   • 1.6k views
   • 
   • Dhamilton07
   • September 17

6. Trailer lights/ Brake issues 2020 Sierra 2500HD AT4

   By Kyle Mastropasqua, September 16
   • 3 replies
   • 352 views
   • 
   • Kyle Mastropasqua
   • September 17

7. Help needed with fuse for ventilated seats

   By gmatx, September 16
   • 1 reply
   • 189 views
   • 
   • gmatx
   • September 17

8. 2024 GMC Denali Ultimate: Outside Temperature Sensor Erratic

   By Shawn T, September 16
   • 0 replies
   • 173 views
   • 
   • Shawn T
   • September 16

9. Buy or Pass

   By James Beyer, August 19
   • 5 replies
   • 655 views
   • 
   • Another JR
   • September 10

10. 2020 2500HD Transmission issues 1 2 3 4

    By gpraceworks, November 16, 2019
    • 45 replies
    • 48.3k views
    • 
    • GMCustomerService
    • September 9

11. Radio freezing up 2023 2500HD LT

    By Mass2500HD, June 6, 2023
    • 5 replies
    • 6.1k views
    • 
    • mjm-1957
    • September 9

12. 2024 2500 At4 - retractable step stuck open

    By SDugg, August 25
    • 1 reply
    • 390 views
    • 
    • RGA
    • September 7

13. 2024 gmc gas hard shift

    By Don032003, September 4
    • 2 replies
    • 759 views
    • 
    • lineman1234
    • September 6

14. High Idle

    By JW2024, August 27
    • 6 replies
    • 541 views
    • 
    • JW2024
    • September 4

15. Feeling Vibration and Jiggles in 2024 HD Gasser Steering Wheel 1 2

    By Texas Gasser, July 6, 2023
    • 20 replies
    • 5.9k views
    • 
    • Dunn
    • August 31

16. Def Consumption

    By Philiparellano, August 14
    • 7 replies
    • 1.3k views
    • 
    • newdude
    • August 29

17. High-pitched noise when accelerating/decelerating at low RPMs (2024 Silverado 2500)

    By switters, August 25
    • 3 replies
    • 479 views
    • 
    • BuckWallace
    • August 28

18. No onstar, gps,or nav

    By airplanefixer, February 4, 2022
    • 7 replies
    • 8.7k views
    • 
    • targ
    • August 28

19. 2024 2500 AT4 turn signal out

    By Bstevens1084, August 27
    • 0 replies
    • 233 views
    • 
    • Bstevens1084
    • August 27

20. 2020 2500HD L5P no communications with modules

    By rdomeck, August 24
    • 3 replies
    • 276 views
    • 
    • asilverblazer
    • August 26

21. Air conditioner delay

    By DUG DUG, August 26
    • 1 reply
    • 407 views
    • 
    • AndrewF
    • August 26

22. Invisible Trailer Camera: Worked on '20, Blank Screen on '24

    By Shawn T, July 30
    • 6 replies
    • 938 views
    • 
    • Shawn T
    • August 23

23. 2024 AT4 2500 dash creaking

    By Bstevens1084, April 29
    • 11 replies
    • 1.8k views
    • 
    • GMCustomerService
    • August 22

24. 6L90E (gas truck) 2-1 downshift CLUNK 1 2

    By Epsilon Plus, September 3, 2022
    • 27 replies
    • 11.2k views
    • 
    • GO-N-KR8Z
    • August 22

25. 24 2500 HD front diff squeaking.

    By 20SierraL8T24, August 12
    • 3 replies
    • 423 views
    • 
    • aro
    • August 20

26. Multi-Pro Tailgate Recall - GM Repair Performed 1 2

    By SoCal Angler, July 19
    • 20 replies
    • 2.5k views
    • 
    • SoCal Angler
    • August 15