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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. N242435631 Recall Update - serial data gateway module

    By SDDenali2024,
    • 6 replies
    • 12.7k views

  2. Switched brands

    By XY74,
    • 11 replies
    • 1.6k views

  3. TPMS Relearn Tool 1 2

    By marpel,
    • 19 replies
    • 36.3k views

  4. Aftermarket seat covers

    By Cheekster96,
    • 4 replies
    • 1.4k views

  5. Rear Shock Bolt size and where to buy

    By SPASierra,
    • 10 replies
    • 11.8k views

  6. Oil Change 1 2

    By rjgvt,
    • 25 replies
    • 3.2k views

  7. Automatic Heated Seats and Steering Wheel

    By jbhardman,
    • 7 replies
    • 8.4k views

  8. The same new emissions that are destroying the motorhome chassis are coming to HD's 1 2 3 4 7

    By 64BAwagon,
    • 93 replies
    • 7.8k views

  9. Dash Backlight Auto-Dim

    By AndrewF,
    • 6 replies
    • 7.1k views

  10. 2024 Front Licence Plate Bracket

    By revrnd,
    • 3 replies
    • 1.8k views

  11. Front Collision Alert Removal

    By AndrewF,
    • 5 replies
    • 14.2k views

  12. Snow tires 1 2

    By rjgvt,
    • 21 replies
    • 5.4k views

  13. Wrecked Multi-Flex tailgate replacement? 1 2

    By davidm767,
    • 17 replies
    • 4.2k views

  14. Factorymanuals.net.....If used, what have been your experiences?

    By SoCal Angler,
    • 13 replies
    • 12.4k views

  15. High Country Question

    By revrnd,
    • 2 replies
    • 1.3k views

  16. LED replacement bulbs for the LT, custom and WT models with halogen brake lamps

    By 64BAwagon,
    • 3 replies
    • 1.1k views

  17. Why doesnt Oshawa build a Tim Hortons edition ? 1 2

    By 64BAwagon,
    • 20 replies
    • 1.9k views

  18. ⚠️ Recall Issued N242454440 2020-2022 1500 and 2500's Momentary Rear Wheel Lockup

    By ManyCamaroz,
    • 2 replies
    • 2.7k views

  19. tpms sensors when swapping wheels 1 2

    By Sonders,
    • 28 replies
    • 11.1k views

  20. Rotten Egg Smell

    By WhoDey,
    • 7 replies
    • 5.9k views

  21. BCGM Truck Purchased 1 2 3 4 7

    By BCGM,
    • 104 replies
    • 9.3k views

  22. USB to 12 Volt Adapter 1 2

    By revrnd,
    • 16 replies
    • 6.7k views

  23. Pandora not available in Apps settings 2024 Sierra

    By cabledude,
    • 1 reply
    • 2.2k views

  24. 2023 2500HD front brakes

    By Jimmy in NC,
    • 4 replies
    • 8.1k views

  25. Screw in tire. Would you do anything?

    By Pryme,
    • 10 replies
    • 1.2k views
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