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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

1,789 topics in this forum

  1. 2500 vs 3500 non daily driver

    By nick112288,
    • 8 replies
    • 12.4k views

  2. Can 2021 2500HD Park Aid Sensors Be Painted?!

    By porksmush,
    • 5 replies
    • 2.9k views

  3. Z71 Sport Package

    By wingnutks,
    • 4 replies
    • 2.3k views

  4. Something disgusting happened to my HD today. 1 2

    By Pryme,
    • 15 replies
    • 2.9k views

  5. 2021 Sierra 2500HD Wind Noise 1 2

    By Bobb Thompson,
    • 25 replies
    • 20.3k views

  6. Z71 package and Towing

    By Steve Hougham,
    • 11 replies
    • 2k views

  7. Auxiliary Accessory Trailer Camera (Connector)

    By patrickrivard,
    • 2 replies
    • 28k views

  8. 2024 2500/3500HD Midnight Edition High Country

    By SidTheKidd,
    • 6 replies
    • 5.2k views

  9. [VIDEO] 2024 Sierra 2500HD Denali Ultimate w/ 6.6 Duramax

    By BrianMello,
    • 0 replies
    • 1.2k views

  10. 2024 Sierra Order!

    By 2k19Sierra,
    • 0 replies
    • 1.3k views

  11. Finally seeing some discounts on cars.com

    By Jettech1,
    • 12 replies
    • 2.3k views

  12. Update on order to build date for 24' Sierra 2500

    By Leonardo Willi,
    • 5 replies
    • 2.5k views

  13. 2024 Highcountry with Vader Chrome

    By aha1987,
    • 5 replies
    • 5.9k views

  14. OEM 17” vs 20” HD wheels and tires

    By Jagerschnapps1,
    • 8 replies
    • 19.5k views

  15. 2024 Silverado HD configurator 1 2 3 4

    By CRApex,
    • 58 replies
    • 12k views

  16. I find this very concerning with the new 2024 diesel 2500's

    By Jettech1,
    • 13 replies
    • 9k views

  17. Locking fuel cap? 1 2

    By Pryme,
    • 17 replies
    • 19.9k views

  18. Key fob programming?

    By shimmy,
    • 5 replies
    • 24.1k views

  19. New here!!!!

    By Agargano98,
    • 12 replies
    • 1.7k views

  20. Tire Pressure 1 2

    By Michael621,
    • 18 replies
    • 49.6k views

  21. Positivity and help goes a long way. Share experiences. Help others...this is what forums are all about. 1 2 3

    By Jettech1,
    • 35 replies
    • 2.7k views

  22. Auxiliary Accessory Trailer Camera 1 2 3 4 12

    By Scott Perkins,
    • 169 replies
    • 143.9k views

  23. P0300 on 2020 Sierra 5.3

    By Chief Paw Paw,
    • 2 replies
    • 2.9k views

  24. How soon to get a 2024 HD Crew Cab Long Box 3500 Gasser LT 1 2

    By skorpyd,
    • 20 replies
    • 4.5k views

  25. 2022 2500 multi position tailgate removal

    By Terry Parkin,
    • 5 replies
    • 14.2k views
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