2020-2024 Silverado HD & Sierra HD Troubleshooting

789 topics in this forum

1. 2025 tailgate with the power up/down feature, what years fit?

   By Suregrip391, 22 hours ago
   • 3 replies
   • 117 views
   • 
   • bruceb58
   • 11 hours ago

3. active aero shutters 1 2 3 4 5

   By H1ghlndr, June 23, 2020
   • 67 replies
   • 37.1k views
   • 
   • revrnd
   • Saturday at 01:52 AM

4. Rear Window Leak and GM warranty warning 1 2

   By bowtie2007, March 18, 2022
   • 18 replies
   • 29.1k views
   • 
   • PESandoval
   • Tuesday at 04:44 PM

5. 2024 silverado 2500 turn signal noise

   By Tims72fte, Tuesday at 04:04 PM
   • 0 replies
   • 123 views
   • 
   • Tims72fte
   • Tuesday at 04:04 PM

6. OBD2 circuit, need to locate fuse.

   By JLeosnow, November 18
   • 2 replies
   • 167 views
   • 
   • JLeosnow
   • November 18

7. Running Lights go out when auto lights come on…

   By CoryP, June 28   

   • Running lights
   • electrical issue
   • (and 1 more)

     Tagged with:

     • Running lights
     • electrical issue
     • trailering system
   • 4 replies
   • 994 views
   • 
   • hankins1
   • November 17

8. key fob transmitter faulty? 1 2 3

   By FirstAscent, March 24, 2020
   • 39 replies
   • 37.3k views
   • 
   • revrnd
   • November 14

9. Bluetooth crackling/static after Y172 update

   By BuckWallace, September 22
   • 8 replies
   • 1.3k views
   • 
   • kissocka
   • November 12

10. Errors with Flatbed Wiring

    By Crosley623, November 12
    • 0 replies
    • 97 views
    • 
    • Crosley623
    • November 12

11. 2021 Duramax, what the heck is this sound?

    By Bighig, November 9
    • 3 replies
    • 306 views
    • 
    • gemarsh
    • November 11

12. Rear Differential Clutch Lock up

    By Andy Casperson, November 10
    • 4 replies
    • 312 views
    • 
    • Andy Casperson
    • November 10

13. 2024 Turn Signals Not Working Properly at Times 1 2 3 4 7

    By jd64, May 21, 2023
    • 95 replies
    • 31.4k views
    • 
    • TyA
    • November 10

14. 2024 Brake controller Problems 1 2 3 4 13

    By Curt Lowe, May 10, 2023
    • 194 replies
    • 67.3k views
    • 
    • bruceb58
    • November 10

15. 2024 high country 13" ent system w/ bose - Audio not working

    By pedroericr, April 23
    • 13 replies
    • 3.3k views
    • 
    • H1ghlndr
    • November 7

16. Truck is not connecting to Home Wi-fi

    By Dick Olson, November 5
    • 0 replies
    • 191 views
    • 
    • Dick Olson
    • November 5

17. 2020 2500 duramax ac drain line location

    By bmpiper55, November 4
    • 0 replies
    • 141 views
    • 
    • bmpiper55
    • November 4

18. 2024 2500HD Gasser Doesn't Charge in Park! 1 2

    By jake111, October 29
    • 26 replies
    • 1.1k views
    • 
    • bruceb58
    • November 3

19. Passenger battery distribution block diagram

    By Gunnar Jacobson, December 28, 2022
    • 7 replies
    • 19.8k views
    • 
    • Ricklrunge
    • November 3

20. Belt squeal (?) on cold start up on 2024 Chevy 2500HD 6.6L Gasser 1 2 3

    By gastrohman, March 11
    • 39 replies
    • 5.9k views
    • 
    • Big Timber
    • November 3

21. AC Port Location

    By Wmwbutler, November 1
    • 2 replies
    • 262 views
    • 
    • Wmwbutler
    • November 3

22. Tires Rubbing

    By Wmwbutler, November 2
    • 0 replies
    • 217 views
    • 
    • Wmwbutler
    • November 2

23. Night time Running lights/ parking lights don’t work 1 2

    By Duramax85, May 1, 2021
    • 15 replies
    • 19.5k views
    • 
    • DennisThomas
    • November 1

24. 2022 GMC 2500 HD 6.6 Gas 6 SPD 4x4 "Thud or felt motion after stopping"

    By Twayne77, October 19
    • 3 replies
    • 514 views
    • 
    • orchardklutzy
    • November 1

25. Rear leaf spring clunk gone with TSB 21-na-138 fix 1 2

    By Pryme, June 3
    • 15 replies
    • 2.3k views
    • 
    • Pryme
    • October 31

26. 6.6L Gas Engine "pinging"

    By AT4X Steve, October 29
    • 5 replies
    • 452 views
    • 
    • AT4X Steve
    • October 30