Troubleshooting, Warranty & Recalls

3,465 topics in this forum

1. ior upgrade

   By Ryno2, March 27, 2021
   • 12 replies
   • 12.2k views
   • 
   • Dekcuf
   • July 11, 2021

2. fighting the man

   By auster001, July 9, 2021
   • 9 replies
   • 1.3k views
   • 
   • Z45
   • July 11, 2021

3. Multiple codes?

   By BrizzoDaIzzo, June 16, 2021
   • 12 replies
   • 29.4k views
   • 
   • mdot
   • July 11, 2021

4. 2020 HD 2500 4X4 will randomly self engage

   By James Sillars, July 11, 2021
   • 0 replies
   • 303 views
   • 
   • James Sillars
   • July 11, 2021

5. How to lift height of driver's seat.

   By HellRazor, July 10, 2021
   • 4 replies
   • 28.6k views
   • 
   • HellRazor
   • July 10, 2021

6. Grease Zerks

   By redbird19, July 9, 2021
   • 2 replies
   • 1k views
   • 
   • newdude
   • July 9, 2021

7. A Little Forethought on Vehicle Breakdowns

   By Transient, July 9, 2021
   • 3 replies
   • 802 views
   • 
   • Transient
   • July 9, 2021

8. S&B CAI '19 5.3 CEL

   By Bubba Lyon, December 2, 2020
   • 11 replies
   • 1.5k views
   • 
   • gemarsh
   • July 9, 2021

9. Loose u bolts on a brand new trail boss causing a skip/misfire feeling???

   By ThatBossChevy21, July 9, 2021
   • 0 replies
   • 1.5k views
   • 
   • ThatBossChevy21
   • July 9, 2021

10. 2020 Silverado 1500 RST 3.0 Duramax Completely Shut Down

    By Jake_Melvin1, July 4, 2021
    • 2 replies
    • 1.5k views
    • 
    • Jake_Melvin1
    • July 9, 2021

11. Electric brake controller

    By Muzz1963, July 8, 2021
    • 0 replies
    • 505 views
    • 
    • Muzz1963
    • July 8, 2021

12. OEM chrome running boards for sale

    By Eric Carille, July 7, 2021
    • 0 replies
    • 536 views
    • 
    • Eric Carille
    • July 7, 2021

13. 2021 GMC AT4 Air Conditioner Condensation

    By Ckhris, July 6, 2021
    • 1 reply
    • 1.5k views
    • 
    • 2016 Sierra Owner
    • July 7, 2021

14. Service warning messages

    By matt grz, July 7, 2021
    • 0 replies
    • 1.4k views
    • 
    • matt grz
    • July 7, 2021

15. Distorted Rearview Mirror

    By John Galt, July 7, 2021
    • 1 reply
    • 668 views
    • 
    • mafd2
    • July 7, 2021

16. Vibrations

    By Rusty Barnes, July 5, 2021
    • 1 reply
    • 746 views
    • 
    • Anacortes Army Guy
    • July 5, 2021

17. Radio is sometimes very bassy, then will switch randomly to very "bright"

    By bigdoug42, July 2, 2021
    • 0 replies
    • 405 views
    • 
    • bigdoug42
    • July 2, 2021

18. 2021 GMC Sierra 3.0 Duramax white smoke

    By Andrius Cvirka, July 1, 2021
    • 0 replies
    • 3.5k views
    • 
    • Andrius Cvirka
    • July 1, 2021

19. Used 2021 AT4 with 3.0 DEF question.

    By brisk00, July 1, 2021   

    • 3.0
    • diesel
    • (and 3 more)

      Tagged with:

      • 3.0
      • diesel
      • duramx
      • def
      • at4
    • 3 replies
    • 2.7k views
    • 
    • mjonesjr84
    • July 1, 2021

20. New 2021 Silverado 6.2 still in shop, haven't even driven it.

    By teatowej, June 23, 2021
    • 8 replies
    • 1.7k views
    • 
    • SporkLover
    • July 1, 2021

21. 2021 start sticking

    By Brooke00517, June 29, 2021
    • 1 reply
    • 1.6k views
    • 
    • gemarsh
    • July 1, 2021

22. Click on brake!

    By James0912, June 29, 2021
    • 2 replies
    • 2.1k views
    • 
    • Aaaaaaaayush
    • June 30, 2021

23. SERVICE BRAKE ASSIST / 2020 SIERRA 1 2

    By Denali2020, April 14, 2020
    • 19 replies
    • 39.5k views
    • 
    • gmdob
    • June 28, 2021

24. Tpms Question

    By Liquid Plumber AT4, June 27, 2021
    • 6 replies
    • 1.2k views
    • 
    • Liquid Plumber AT4
    • June 28, 2021

25. "Scraping" Noise - UPDATE: Transmission being replaced

    By GFD70 ZL1, May 18, 2021
    • 13 replies
    • 12k views
    • 
    • GFD70 ZL1
    • June 27, 2021