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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.

    8.8k
    posts

  2. Modifications & Accessories

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

    11k
    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

1,791 topics in this forum

  1. 2200 Denali display dead.....

    By Robg87,
    • 6 replies
    • 1.1k views

  2. 2023 Chevy 3500HD Dually w/Bradford Flat Bed

    By 3500HDAK,
    • 2 replies
    • 3.4k views

  3. 2024 gmc 3500 dually questions 1 2

    By Mike Weinandy,
    • 16 replies
    • 2.9k views

  4. 295/65/20

    By CFRED70,
    • 14 replies
    • 38.9k views

  5. Service woes: Is this a sign of things to come?

    By 916TrailBoss,
    • 9 replies
    • 1.7k views

  6. Contractor deciding on 2500vs1500 1 2

    By joe holman,
    • 17 replies
    • 3.8k views

  7. Getting your transmission fluid replaced at the dealer and they will pay 4k if it fails?

    By Jettech1,
    • 3 replies
    • 1.4k views

  8. 2022 GMC 2500 tires slipping while turning slow

    By Marco A,
    • 1 reply
    • 1.1k views

  9. 2020 GMC Sierra 2500HD Denali 6.6L Gas

    By Wade Palmer,
    • 5 replies
    • 4.7k views

  10. Silverado 1500 Trail Boss gas tank size?

    By 916TrailBoss,
    • 3 replies
    • 6.3k views

  11. Engine running rich

    By Gconrad,
    • 1 reply
    • 1.7k views

  12. 2023 Tahoe not displaying turn by turn navigation in the HUD

    By Jeff Chelepis,
    • 1 reply
    • 1.1k views

  13. We all come to Forums looking for answers to Problems we have...How many come to just say...I love my truck? 1 2 3 4

    By Jettech1,
    • 46 replies
    • 7.7k views
    • EPL
    • EPL

  14. Which truck should I take? 1 2

    By pioneer 1,
    • 26 replies
    • 4.7k views

  15. This has to be near or over weight?

    By Pryme,
    • 6 replies
    • 1.9k views

  16. Used 2024 Sierra 2500HD AT4 1 2

    By tonto340,
    • 19 replies
    • 6.2k views

  17. Spare tire TPS ?

    By 2021 HD,
    • 3 replies
    • 924 views

  18. Leaking Slider Repair

    By ShotgunZ71,
    • 4 replies
    • 1.9k views

  19. Winter wheels offset

    By Crazy Canuck,
    • 0 replies
    • 703 views

  20. Multipro Tailgate Use With Forklift?

    By Haoleguy,
    • 11 replies
    • 3.3k views

  21. Will the 6.6 gas engine directly bolt into a 2014 1/2 ton?

    By Jettech1,
    • 13 replies
    • 10.9k views

  22. 2024 Silverado 2500 wheel well liner installation

    By Genesis211,
    • 6 replies
    • 14.6k views

  23. I believe appreciation needs to go out to this person on this site of whom is always there to answer questions with factual information.

    By Jettech1,
    • 13 replies
    • 1.8k views

  24. 3500hd srw vs 2500hd max trailering package?

    By kingpenm3,
    • 2 replies
    • 12.4k views

  25. Truck Mirror

    By rdonarski,
    • 4 replies
    • 1.1k views

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