Troubleshooting, Warranty & Recalls

3,465 topics in this forum

1. 2020 custom trail boss...shift solenoid

   By mountaineerhughes, April 19, 2020
   • 3 replies
   • 4.2k views
   • 
   • BurnsMax
   • April 20, 2020

2. 2020 Denali infotainment reading USB thumbdrive

   By TPP, September 11, 2020
   • 1 reply
   • 5.1k views
   • 
   • Rook126
   • September 11, 2020

3. 2020 driver side dash speaker grill curved upward in front

   By MichLakes, May 11, 2020
   • 3 replies
   • 3.1k views
   • 
   • Rensi
   • May 13, 2020

4. 2020 dually tpms relearn procedure

   By Jetlag, December 31, 2020
   • 1 reply
   • 12.7k views
   • 
   • redwngr
   • January 1, 2021

5. 2020 Elevation issue

   By Russ Ryan, December 28, 2019
   • 0 replies
   • 426 views
   • 
   • Russ Ryan
   • December 28, 2019

6. 2020 front diff

   By Zacfrd, July 12, 2022
   • 9 replies
   • 927 views
   • 
   • Steve-2019
   • July 12, 2022

7. 2020 Frozen Parking Sensors

   By ShamrockShooter, November 12, 2019
   • 13 replies
   • 9.8k views
   • 
   • GMCustomerService
   • December 30, 2022

8. 2020 Fuel System Recall

   By MannyE, February 25, 2020
   • 2 replies
   • 8.5k views
   • 
   • greco2003
   • February 25, 2020

9. 2020 GMC 1500 3.0l idle problem Ive tried everything....

   By CFidu2023, May 3, 2023
   • 0 replies
   • 1.7k views
   • 
   • CFidu2023
   • May 3, 2023

10. 2020 GMC 1500 AT4

    By Greg B, February 1, 2021   

    • Wipers
    • defroster
    • 4 replies
    • 6.3k views
    • 
    • silveradosid
    • February 25, 2022

11. 2020 GMC 3.0 diesel tpms accuracy

    By TheTruck41, July 24, 2020
    • 11 replies
    • 1.4k views
    • 
    • TheTruck41
    • July 26, 2020

12. 2020 GMC 3.0 Trans Failure

    By TT331FB, May 30, 2022
    • 8 replies
    • 1.8k views
    • 
    • redwngr
    • June 22, 2022

13. 2020 gmc denali hd

    By Tom Wiltrout, December 8, 2021   

    • Diesel 2500
    • 1 vent no heat
    • 2 replies
    • 5.8k views
    • 
    • eppieguy
    • December 9, 2021

14. 2020 GMC rear window fuse

    By Hurricane-Watch, October 11, 2023
    • 0 replies
    • 793 views
    • 
    • Hurricane-Watch
    • October 11, 2023

15. 2020 GMC Sierra "Extended Parking"- how to disable

    By Hans Antonsen, December 15, 2021
    • 1 reply
    • 1.4k views
    • 
    • Jac365
    • December 16, 2021

16. 2020 GMC Sierra 10 speed

    By Ajt116, October 11, 2020
    • 3 replies
    • 1.3k views
    • 
    • BurnsMax
    • October 14, 2020

17. 2020 GMC Sierra 1500

    By Ja-Rod, June 2, 2020   

    • towing
    • check engine light
    • 0 replies
    • 2.2k views
    • 
    • Ja-Rod
    • June 2, 2020

18. 2020 GMC Sierra 1500 - front windows cracking and clicking sound

    By Steve Dubé, July 2, 2023
    • 1 reply
    • 568 views
    • 
    • Steve Dubé
    • July 2, 2023

19. 2020 GMC Sierra 1500 3.0 Diesel Everyday Mileage

    By Sierra 3.0, July 16, 2020
    • 3 replies
    • 1.3k views
    • 
    • afterburner82
    • September 15, 2020

20. 2020 GMC Sierra 1500 Brake System Failure; Looking for advice.

    By Ehalljr, February 8, 2025
    • 2 replies
    • 3.9k views
    • 
    • Ehalljr
    • March 27, 2025

21. 2020 GMC Sierra 1500 Engine Harness

    By Dogmom2, May 30, 2025
    • 0 replies
    • 795 views
    • 
    • Dogmom2
    • May 30, 2025

22. 2020 GMC Sierra 1500 Fender Liners

    By JPGMC1500, October 2, 2020
    • 1 reply
    • 1.5k views
    • 
    • Boondock
    • October 3, 2020

23. 2020 GMC Sierra 1500 slt

    By Russell Jamison, September 5, 2020   

    • Wiring diagram
    • Rear tail lights
    • 2 replies
    • 944 views
    • 
    • bshort
    • September 7, 2020

24. 2020 gmc sierra 1500 won't start or even attempt to turn over

    By kgreen51, October 1, 2020
    • 9 replies
    • 23.9k views
    • 
    • winks79
    • October 7, 2020

25. 2020 GMC Sierra 5.3L - Clear leak + engine light 1 2

    By Jbrockltd, August 25, 2020   

    • leak
    • enginelight
    • (and 2 more)

      Tagged with:

      • leak
      • enginelight
      • sierra1500
      • 2020Sierraissues
    • 19 replies
    • 5.2k views
    • 
    • Vicarod
    • August 27, 2020