Troubleshooting, Warranty & Recalls

3,465 topics in this forum

1. 2020 GMC sierra AT4 1 2

   By River gal, December 9, 2023
   • 15 replies
   • 6.8k views
   • 
   • Candace Blakemore
   • January 10, 2024

2. 2020 GMC Sierra AT4 5.3L 2.7k miles squeaking behind steering wheel

   By Endshine, February 28, 2022
   • 3 replies
   • 3.4k views
   • 
   • Jcollette33
   • March 1, 2022

3. 2020 GMC Sierra AT4 vibrating noise coming from rear.

   By ARW14, April 6, 2023
   • 1 reply
   • 703 views
   • 
   • Silverado4x4
   • April 6, 2023

4. 2020 gmc sierra ATV heads up display compass not working

   By Scully2000, January 4, 2022
   • 6 replies
   • 9.1k views
   • 
   • redwngr
   • January 9, 2022

5. 2020 GMC Sierra drivers side (both) doors (passenger side works) will not unlock

   By Antishatter, October 8, 2024
   • 1 reply
   • 510 views
   • 
   • redwngr
   • October 9, 2024

6. 2020 GMC Sierra Elevation Back-Up Camera Too Bright At Night!

   By Hulkami44, November 30, 2020
   • 2 replies
   • 824 views
   • 
   • Unique_NY
   • November 30, 2020

7. 2020 GMC Sierra elevation Steering wheel won’t telescope any more

   By JeffP33, May 6, 2023
   • 7 replies
   • 6.2k views
   • 
   • GMCustomerService
   • May 15, 2023

8. 2020 GMC Sierra Elevation with Bose

   By matt grz, November 10, 2020
   • 5 replies
   • 1.2k views
   • 
   • matt grz
   • November 11, 2020

9. 2020 GMC Sierra SLT Mirror Glitch

   By mdand, December 30, 2022
   • 3 replies
   • 1.8k views
   • 
   • mdand
   • December 30, 2022

10. 2020 HD 2500 4X4 will randomly self engage

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

11. 2020 HD Chevy LTZ Navigation question

    By Wyoming T/A, July 9, 2020
    • 0 replies
    • 447 views
    • 
    • Wyoming T/A
    • July 9, 2020

12. 2020 heated seats dont work when remote start used

    By vette10r, October 23, 2020
    • 13 replies
    • 20.1k views
    • 
    • Georgaina
    • October 27, 2020

13. 2020 High Country paint problem

    By Andrew W., April 5, 2020
    • 8 replies
    • 3k views
    • 
    • dsr611
    • April 6, 2020

14. 2020 High Country/ 1500 won’t start

    By PNK, July 23, 2020
    • 2 replies
    • 1k views
    • 
    • Colossus
    • July 24, 2020

15. 2020 LT CEL on after I turned it off in gear

    By Chris Gooch, September 8, 2022
    • 1 reply
    • 539 views
    • 
    • GMCustomerService
    • September 9, 2022

16. 2020 LT flasher relay location

    By None12, November 22, 2021
    • 5 replies
    • 26.4k views
    • 
    • Bikerjon
    • May 14, 2023

17. 2020 LT Silverado LT Rear Seat Arm Rest

    By andrewb24, April 5, 2021
    • 3 replies
    • 4.4k views
    • 
    • Adamace1
    • May 4, 2021

18. 2020 LT Trail Boss 5.3 issues 10 speed issues??

    By Kimberly Crawford, March 17, 2021
    • 5 replies
    • 4.3k views
    • 
    • Troger
    • March 19, 2021

19. 2020 LTZ 1500 Trailering

    By Circuit-1, May 27, 2021
    • 2 replies
    • 832 views
    • 
    • Circuit-1
    • June 4, 2021

20. 2020 LTZ 3.0 in the shop 4x with under 12k!!!!

    By joshuapchase, January 20, 2021
    • 11 replies
    • 2.8k views
    • 
    • Colossus
    • February 20, 2021

21. 2020 Misfire and KR Issues

    By Brandon Clounch, August 10, 2020
    • 0 replies
    • 2.1k views
    • 
    • Brandon Clounch
    • August 10, 2020

22. 2020 Passenger Door Lock not working

    By SilverBulletBoss, October 14, 2023
    • 5 replies
    • 5.1k views
    • 
    • GMCustomerService
    • October 23, 2023

23. 2020 rear suspension bottoming out HARD.

    By topgear1224, April 17, 2020
    • 9 replies
    • 11.8k views
    • 
    • topgear1224
    • May 6, 2020

24. 2020 Rough idling 5.3

    By Sntos20RST, June 17, 2022
    • 12 replies
    • 2.4k views
    • 
    • Gangly
    • June 24, 2022

25. 2020 rst making noise from behind dash around headlight switch

    By Jcollette33, November 13, 2021
    • 1 reply
    • 602 views
    • 
    • Jcollette33
    • November 13, 2021