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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. GM to recall hd's for tailgate dropping... 1 2 3 4 6

    By gemarsh,
    • 79 replies
    • 15.1k views

  2. 2020+ Rear Axle

    By Big-Cheese,
    • 3 replies
    • 2k views

  3. Overall height 2500 AT4.

    By MTY55,
    • 3 replies
    • 6.5k views

  4. Aluminum?

    By C/K Man,
    • 14 replies
    • 39.4k views

  5. Does the exhaust brake operate the brake lights?

    By Brummie99,
    • 2 replies
    • 985 views

  6. 2023 2500HD hood oil canning

    By joe nel,
    • 5 replies
    • 1.1k views

  7. Air ride suspension add to 2021 2500 HD Crew Cab

    By Trey Eckert,
    • 7 replies
    • 4.4k views

  8. Upfitter foil tape

    By rjgvt,
    • 0 replies
    • 1.3k views

  9. I'm so confused....I don't want to let my beloved gasser go.... 1 2 3 4 6

    By Jettech1,
    • 89 replies
    • 10.1k views

  10. Mechanics in Orlando, FL

    By Moyses,   
    • 3 replies
    • 951 views

  11. Silverado 5500HD Integrated Trailer Brake Module Location?

    By 08lt17,
    • 1 reply
    • 3.2k views

  12. Couple interior questions

    By madweazl,
    • 2 replies
    • 927 views

  13. Warranty Challenges by doing your own simple maintenance?

    By ManyCamaroz,
    • 13 replies
    • 2.8k views

  14. GM Bed Mat

    By ManyCamaroz,
    • 7 replies
    • 3.3k views

  15. Any of our HD crew ride motorcycles?

    By Pryme,
    • 7 replies
    • 1.1k views

  16. Goodyear Trailrunner Tires Sidewall Issue 1 2 3

    By twofish,
    • 42 replies
    • 23.2k views

  17. Rumor Has It 1 2

    By littleal,
    • 19 replies
    • 3.1k views

  18. GMC Protection Plans

    By SuperDuper,
    • 3 replies
    • 1.1k views

  19. Dealerships 1 2 3 4

    By BCGM,
    • 47 replies
    • 4.9k views

  20. OIL REBATE

    By littleal,
    • 0 replies
    • 704 views

  21. New tires on 2500 Ultimate

    By Moyses,   
    • 1 reply
    • 1.7k views

  22. Dash panel removal 1 2

    By rjgvt,
    • 19 replies
    • 22.1k views

  23. Towing first 500 miles? 1 2

    By Mid-Night Rider,
    • 25 replies
    • 4.1k views

  24. Mirror upgrade

    By Jay96,
    • 13 replies
    • 20.4k views

  25. Locking Gas Door? 1 2

    By BigEdB,   
    • 21 replies
    • 61.8k views
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