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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. Transparent Trailer w/ Distorted View

    By Daemon,
    • 3 replies
    • 1.4k views

  2. Am I missing something or did GM drop the ball?

    By Sumrtime,
    • 9 replies
    • 2.2k views

  3. My 2020 Duramax - My finished project, CST Stage 9

    By combat1500,
    • 5 replies
    • 1.6k views

  4. Hate the Soft roll up

    By nards444,
    • 12 replies
    • 2.2k views

  5. Finally Took Delivery!

    By Tjeli,
    • 8 replies
    • 1.9k views

  6. Improving turning radius 1 2

    By Arkangel,
    • 18 replies
    • 45.2k views

  7. Connector separation from accessory trailer camera

    By D-Strong,
    • 2 replies
    • 947 views

  8. Towing question

    By SuperDuper,
    • 10 replies
    • 3.1k views

  9. Aftermarket TPMS

    By dquest,
    • 4 replies
    • 1.3k views

  10. Differential gear oil

    By Jay2500,
    • 7 replies
    • 49.5k views

  11. Service airbag

    By Sledfreak63,
    • 0 replies
    • 500 views

  12. 3500 x31 vs regular 4x4

    By Pilsner Man,
    • 2 replies
    • 2.2k views

  13. Thoughts on Android Auto or CarPlay 1 2

    By HiggySTL,
    • 16 replies
    • 4.5k views

  14. Truck shocks for my 2017 Chevrolet Silverado

    By Bjorg,
    • 1 reply
    • 860 views

  15. New 2022 GMC Sierra & 2022 Silverado - More Bad News?!

    By Cosmic Charlie,
    • 0 replies
    • 1.8k views

  16. Spare tire cable.

    By Grjfer,
    • 3 replies
    • 8.8k views

  17. New order build

    By Cheekster96,
    • 3 replies
    • 1.1k views

  18. USB Media Size info

    By mainetruck,   
    • 1 reply
    • 2.7k views

  19. TONNEAU COVER AND GMC SPORT BAR INSTALL ON 2020 SIERRA 2500HD

    By DARK23,
    • 7 replies
    • 2.9k views

  20. Subwoofer

    By CaptainMorganNC,
    • 4 replies
    • 2.4k views

  21. Alternative to GM# 84876818 camera 1 2 3

    By Chevy350Z,
    • 37 replies
    • 27.8k views

  22. '21 2500HD AT4 6.6L introduction!

    By xETERNALx,
    • 6 replies
    • 4.3k views

  23. DEF Regen causing camper trim to melt?

    By Sledguyry,
    • 9 replies
    • 8.2k views

  24. 3500 DRW Hitch Height

    By John FX,
    • 10 replies
    • 13.7k views

  25. Wheels

    By Rodney Van Dyke,
    • 3 replies
    • 1.1k views
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