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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. Build times for HD's will likely get longer 1 2 3

    By 64BAwagon,
    • 34 replies
    • 5.9k views

  2. Color Discrepancy?

    By AndrewF,
    • 13 replies
    • 10.3k views

  3. Chevy HD discounts upcoming?

    By vucelick,
    • 6 replies
    • 4.2k views

  4. [?] Anyone able to force fullscreen CarPlay/AAuto

    By lvalentin,   
    • 9 replies
    • 33.1k views

  5. 2024 Silverado 2500 HD rear windows

    By Larry Ribble,
    • 3 replies
    • 2.1k views

  6. 18" Tire Replacement

    By hs5870,
    • 4 replies
    • 1.9k views

  7. 2023 3500 Denali Dually. Hill Assist & Hill Decent

    By Bob Mc Kenzie,
    • 2 replies
    • 1.1k views

  8. Floor Liner Question

    By revrnd,
    • 9 replies
    • 1.3k views

  9. Electronic controls quit working intermittently

    By sigmonster,
    • 0 replies
    • 578 views

  10. Discount Dealer on East Coast

    By bruceb58,
    • 0 replies
    • 658 views

  11. Very large addition being added to Flint assembly. 1 2 3 4 5

    By 64BAwagon,
    • 73 replies
    • 9.7k views

  12. Ramp Support Patent

    By revrnd,
    • 2 replies
    • 829 views

  13. 2022 Chev 3500HD Dually rear spindle nut

    By Brad Clarke,
    • 2 replies
    • 12.2k views

  14. New 2024 3500HD Software Update? 1 2 3

    By Rick_,
    • 33 replies
    • 13.6k views

  15. 6.6 Gas Hood Question/Battery Drain

    By colts,   
    • 3 replies
    • 3.4k views

  16. Fast Idle UF3 Update

    By bruceb58,
    • 8 replies
    • 2.5k views

  17. truck bed handle 1 2 3

    By Sonders,
    • 37 replies
    • 36k views

  18. T1XX Torsion Bar Question 1 2 3

    By revrnd,
    • 30 replies
    • 4k views

  19. N242435631 Recall Update - serial data gateway module

    By SDDenali2024,
    • 6 replies
    • 12.1k views

  20. Switched brands

    By XY74,
    • 11 replies
    • 1.5k views

  21. TPMS Relearn Tool 1 2

    By marpel,
    • 19 replies
    • 35.5k views

  22. Aftermarket seat covers

    By Cheekster96,
    • 4 replies
    • 1.4k views

  23. Rear Shock Bolt size and where to buy

    By SPASierra,
    • 10 replies
    • 11.1k views

  24. Oil Change 1 2

    By rjgvt,
    • 25 replies
    • 3k views

  25. Automatic Heated Seats and Steering Wheel

    By jbhardman,
    • 7 replies
    • 8.2k views
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