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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. Text Messages

    By marpel,
    • 0 replies
    • 921 views

  2. Trailer Tire Pressure Management

    By Duke0839,
    • 1 reply
    • 921 views

  3. Excessive steam from exhaust

    By greatmizzou,
    • 1 reply
    • 919 views

  4. 2024 Silverado 2500

    By Baron Davis,
    • 0 replies
    • 918 views

  5. Build and Price question - GM Canada

    By gmckenzie,
    • 1 reply
    • 917 views

  6. Questions And Questions

    By nards444,
    • 4 replies
    • 916 views

  7. Waiting sucks....

    By bhales,
    • 2 replies
    • 915 views

  8. Front seats

    By Joe nesbitt,
    • 2 replies
    • 912 views

  9. 21 w/ior any point to connect to home Wi-Fi ?

    By Mrdingdong,
    • 3 replies
    • 912 views

  10. Upper Control Arms

    By Travemza,
    • 2 replies
    • 911 views

  11. Commercial

    By gearheadesw,
    • 3 replies
    • 911 views

  12. Towing Miles Tracked on Computer? How to Export?

    By I___F,
    • 3 replies
    • 909 views

  13. AirDog, who has it?

    By Londart2020,
    • 1 reply
    • 908 views

  14. Scare me away or have me forever

    By Wayne Carter,
    • 2 replies
    • 904 views

  15. Trim Height Z Measurement

    By Wxman,
    • 3 replies
    • 904 views

  16. EXT door handle model year ranges

    By Sonders,
    • 7 replies
    • 904 views

  17. Spare tire TPS ?

    By 2021 HD,
    • 3 replies
    • 902 views

  18. Question about 21-23 off road high clearance steps

    By juliaoakes,
    • 1 reply
    • 896 views

  19. Anyone lost their fuel gauge instrumentation or heard of an ECM update?

    By KC Desert,
    • 4 replies
    • 895 views

  20. driver side wiper

    By georgecdisc,
    • 6 replies
    • 892 views

  21. 22 Chev 2500HD 6.6 gas will have "engine oil hot" alarm and code when towing

    By AdamSNF,
    • 11 replies
    • 892 views

  22. Dealer can pickup your truck

    By Fishfighter,
    • 0 replies
    • 891 views

  23. BDS 6.5" Kits Announced/Released !!

    By FirstAscent,
    • 2 replies
    • 890 views

  24. Center Jump complete disassemble

    By Sonders,
    • 1 reply
    • 888 views

  25. T1XX Trunnion Bushings

    By revrnd,
    • 7 replies
    • 886 views
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