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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

1,787 topics in this forum

  1. 2024 Chevy Tailgate

    By boxer44,
    • 1 reply
    • 2.1k views

  2. Big Red update

    By Cheekster96,
    • 4 replies
    • 1.2k views

  3. Parking Lot Shenanigans 1 2 3

    By the8rotor,
    • 31 replies
    • 4.7k views

  4. Switched power/ RAP on passenger side fuse box

    By sigmonster,
    • 3 replies
    • 12.5k views

  5. Best way to install back up camera for a 2500 HD with Service Body

    By Chevykris,
    • 1 reply
    • 4.2k views

  6. And here we go with the whole tail "gate" and "water gate" issue of it opening on its own!

    By Jettech1,
    • 14 replies
    • 5.3k views

  7. Rust Proofing 2024 GMC Sierra HD due to NY Winters 1 2

    By Savannah Ottman,
    • 16 replies
    • 6.8k views

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

    By Jettech1,
    • 30 replies
    • 2.8k views

  9. 6.6 Gas - choosing Flowmaster exhaust 1 2 3 4

    By NWSierra,
    • 52 replies
    • 26.7k views

  10. Solution For Hitch Left in Receiver Turning off Reverse Sensors

    By motorcare,   
    • 3 replies
    • 5k views

  11. What do you tow with your beast? Pics and experience please.... 1 2 3 4 7

    By Jettech1,
    • 93 replies
    • 16.9k views

  12. Who has a plow? 1 2

    By deluter,
    • 25 replies
    • 30k views

  13. Multiple TPMS resets? Short question, long story.

    By NWSierra,
    • 5 replies
    • 1.1k views

  14. 2020 2500HD console to jump seat swap 1 2 3

    By Craig Deary,   
    • 39 replies
    • 45.4k views

  15. 110v constant on possible?

    By sasq40,
    • 1 reply
    • 875 views

  16. 2020 2500 Hard Reset

    By Ameziere22,
    • 1 reply
    • 1.5k views

  17. Stop Sale Sierra and Silverado

    By Phantom 4D,
    • 9 replies
    • 1.9k views

  18. My dream truck, what is yours? 1 2 3

    By Jettech1,
    • 44 replies
    • 4.3k views

  19. 2200 Denali display dead.....

    By Robg87,
    • 6 replies
    • 1k views

  20. 2023 Chevy 3500HD Dually w/Bradford Flat Bed

    By 3500HDAK,
    • 2 replies
    • 3.2k views

  21. 2024 gmc 3500 dually questions 1 2

    By Mike Weinandy,
    • 16 replies
    • 2.9k views

  22. 295/65/20

    By CFRED70,
    • 14 replies
    • 37.7k views

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

    By 916TrailBoss,
    • 9 replies
    • 1.7k views

  24. Contractor deciding on 2500vs1500 1 2

    By joe holman,
    • 17 replies
    • 3.7k views

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

    By Jettech1,
    • 3 replies
    • 1.4k views
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