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2020+ Silverado HD & Sierra HD Troubleshooting

A central location to report any issues or asking for help troubleshooting any problems with your 2020 Chevrolet Silverado 2500 / 3500 or 2020 GMC Sierra 2500 / 3500. Also recall announcements and Technical Service Bulletins (TSB).

621 topics in this forum

  1. Black Line Across Radio Screen

    By Core-Lokt,
    • 10 replies
    • 777 views

  3. Whistling sound from drivers side at 45mph or greater 1 2

    By GMC4Zee,
    • 29 replies
    • 1.5k views

  4. Changed Batteries and have reduced power and more.

    By Mattic33,
    • 2 replies
    • 721 views

  5. Fuel Filter Re-Set on 2021 Silverado 2500HD with Duramax Diesel .....

    By Tucson Jack,
    • 1 reply
    • 561 views

  6. Multipro tailgate upper section lockout procedure - anyone used it successfully?

    By Another JR,
    • 10 replies
    • 1.7k views

  7. Blind Spot Monitoring w/Trailer

    By Skeld,
    • 3 replies
    • 925 views

  8. Center console locks intermittently when down

    By NaturallyAspirated,
    • 0 replies
    • 274 views

  9. Pro Tailgate Repair Questions

    By KuiMonster,
    • 6 replies
    • 433 views

  10. 2022 silverado 1500 custom 3.5inch lift

    By Jj,
    • 0 replies
    • 341 views

  11. 2500 Bedlights on w/o mirror lights?

    By Mass2500HD,
    • 2 replies
    • 589 views

  12. Passenger battery distribution block diagram

    By Gunnar Jacobson,
    • 6 replies
    • 4.7k views

  13. Fuel Filter Fizzing

    By AT4-DMAX-HD,
    • 0 replies
    • 387 views

  14. Center console is freezing

    By Mainliner,
    • 3 replies
    • 1.1k views

  15. Who designed the shift pattern on the automatic

    By TVJ,
    • 1 reply
    • 546 views

  16. Power Tailgate Won’t Open

    By BruceP,   
    • 14 replies
    • 51k views

  17. Center console is freezing

    By Mainliner,
    • 1 reply
    • 389 views

  18. Hard starting 1 2

    By Chevyscag,
    • 17 replies
    • 1k views

  19. Brake Pad Wear Reset problem

    By MikeMikeMike,
    • 6 replies
    • 2.8k views

  20. Side Mirror tightening

    By marpel,
    • 0 replies
    • 846 views

  21. Google On Car Play

    By Rob Sarabin,
    • 1 reply
    • 354 views

  22. Subtle bouncing when idling and slow speed surging

    By bowtie2007,
    • 4 replies
    • 598 views

  23. Dash buzzing at idle after cold start

    By Njmurvin,
    • 8 replies
    • 1.7k views

  24. Glitchy radio/infotainment system/screen

    By Pryme,
    • 2 replies
    • 774 views

  25. Trailer TPMS setup not detecting sometimes

    By mkirkland,
    • 0 replies
    • 218 views

  26. 2020 Chevy gas harsh downshift 1 2

    By Nathan Leslie,
    • 18 replies
    • 11.7k views


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