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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.

    5.5k
    posts

1,787 topics in this forum

  1. Kind of dead in here.... 1 2 3

    By Jettech1,
    • 30 replies
    • 2.8k views

  2. T1XX Torsion Bar Question 1 2 3

    By revrnd,
    • 30 replies
    • 4k views

  3. 2022 Duramax Chevy 2500 LT with leather and bucket seats vs GMC AT4 with 6.6 GAS and more options???????? 1 2

    By Gabe Bunn,
    • 29 replies
    • 9k views

  4. Allison 10-speed 1 2

    By EXSlider400,
    • 29 replies
    • 17.3k views

  5. Trade High Country for ZR2? 1 2

    By gregus73,
    • 29 replies
    • 1.5k views

  6. When will GM raise the Torque on the Duramax ? 1 2

    By f8l vnm,
    • 29 replies
    • 8.2k views

  7. Build Time 1 2

    By bigman32hockey,
    • 29 replies
    • 6.6k views

  8. I have an abstract mind and love to think out of the box....so lets say!! 1 2

    By Jettech1,
    • 28 replies
    • 2.4k views

  9. New old 2022s 1 2

    By Jettech1,
    • 28 replies
    • 3.3k views

  10. Curb weight 1 2

    By mbsfgts,
    • 28 replies
    • 18.8k views

  11. Best reason to order a Sunroof 1 2

    By sheath,
    • 28 replies
    • 10.5k views

  12. An oblong hitch hole 1 2

    By Jettech1,
    • 28 replies
    • 4.2k views

  13. DEF usage on 2020 HD models 1 2

    By Wbrisett,
    • 28 replies
    • 36.7k views

  14. Extended Idle Time 1 2

    By Nspctr,
    • 28 replies
    • 51.6k views

  15. tpms sensors when swapping wheels 1 2

    By Sonders,
    • 28 replies
    • 10.4k views

  16. Will 2020's be rare? 1 2

    By migrabill,
    • 27 replies
    • 3.6k views

  17. What does "in line towards production" mean? 1 2

    By migrabill,
    • 27 replies
    • 4.7k views

  18. Help with torsionbars 1 2

    By doidera00,
    • 27 replies
    • 27.2k views

  19. 2021 SIlverado 2500HD Ride Quality & Wheel Questions 1 2

    By M Parr,
    • 27 replies
    • 33.8k views

  20. Towing really heavy loads, what else do I need to know? 1 2

    By FirstAscent,
    • 27 replies
    • 6.7k views

  21. Heavy Duty Front Spring for Travel Trailer? 1 2

    By ARM3,
    • 26 replies
    • 23.6k views

  22. Which truck should I take? 1 2

    By pioneer 1,
    • 26 replies
    • 4.6k views

  23. Power outlet 1 2

    By Los-0,
    • 26 replies
    • 77.2k views

  24. When do you think I will get my truck? 1 2

    By migrabill,
    • 26 replies
    • 4.2k views

  25. Inventory Tracker Updates 1 2

    By Merc0085,
    • 26 replies
    • 3.4k views
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