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2020-2026 Silverado HD & Sierra HD

The heavy-duty headquarters. Discussion for the 2500HD and 3500HD. Towing, payload, ordering, and daily driving.

 

 

Subforums

  1. Troubleshooting, Warranty & Recalls

    The repair shop. Diagnose emissions codes, electrical issues, Allison transmission behavior, and recall updates.

    8.7k
    posts

  2. Modifications & Accessories

    Bumper replacements, 5th wheel hitches, auxiliary lighting, and suspension upgrades for your workhorse.

    10.9k
    posts

  3. 6.6L Duramax Diesel (L5P)

    The torque monster. Tuning, maintenance, and exhaust discussion for the L5P Duramax and 10-speed Allison transmission.

    2.2k
    posts

  4. 6.6L Gas V8 (L8T)

    The iron-block workhorse. Tech and reliability discussion for the 6.6L L8T V8 and the 6-speed / 10-speed heavy-duty transmissions.

    5.6k
    posts

1,789 topics in this forum

  1. 2022 WT leather streering wheel option

    By SBBOBB,
    • 2 replies
    • 1k views

  2. Roof Rack - Rhino vs Yakima

    By 2020-2500,
    • 0 replies
    • 1k views

  3. $2,000 GMC Customer Cash Offer on 2020 GMC Sierra 2500HD Crew Cab

    By Say When,
    • 8 replies
    • 1k views

  4. Light bar options 2020 Silverado 3500?

    By Sledguyry,
    • 0 replies
    • 1k views

  5. 2020 Silverado whistling noise

    By Mario C,
    • 3 replies
    • 997 views

  6. Moving/adding center stack switches '22 2500HD

    By Nodakrider,
    • 1 reply
    • 996 views

  7. Car Lot To Dealer

    By cattledog04,
    • 3 replies
    • 996 views

  8. My black beauty beast finally saw it's direct relative yesterday.

    By Jettech1,
    • 3 replies
    • 995 views

  9. It's not a ZZ632...

    By gemarsh,
    • 3 replies
    • 994 views

  10. 2020 Gmc 2500HD Engine buzzing on acceleration

    By SKel,
    • 3 replies
    • 993 views

  11. TPMS Recognition Disappearing

    By Shawn T,
    • 2 replies
    • 991 views

  12. Metalic Noise 2020 Silverado Custom

    By Clay Colley,
    • 1 reply
    • 987 views

  13. Does the exhaust brake operate the brake lights?

    By Brummie99,
    • 2 replies
    • 985 views

  14. Looking for torque values

    By Agargano98,
    • 2 replies
    • 982 views

  15. GAS 2020 GM 2500 6.6 crew 4x4 MPG

    By Gabe Bunn,
    • 1 reply
    • 982 views

  16. standard bed floor flatness

    By GmEnjoyer,
    • 8 replies
    • 980 views

  17. Dash/Infotainment Screen/Climate Button Backlights Randomly Turn Off . . . then On

    By jake111,
    • 8 replies
    • 979 views

  18. power steering

    By Dunn,
    • 3 replies
    • 979 views

  19. DEF stability question for newbie

    By Njmurvin,
    • 3 replies
    • 972 views

  20. Fuel Filter Relocation

    By inquenciocha,
    • 2 replies
    • 972 views

  21. Shipping via rail

    By cattledog04,
    • 3 replies
    • 970 views
    • HR3
    • HR3

  22. Ordering and First Drive Experience

    By marpel,
    • 0 replies
    • 967 views

  23. Leather options on the 2020 Denali

    By MigueltheCM,
    • 1 reply
    • 965 views

  24. Large safety recall just issued by GM

    By SilveradoX2,
    • 3 replies
    • 963 views

  25. 2020 Sierra HD Teaser

    By sk,
    • 2 replies
    • 962 views
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