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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

    • 2 replies
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  1. SLT vs SLE Options

    • 11 replies
    • 6.4k views
  2. 2020 HD Badging

    • 10 replies
    • 4.3k views
  3. DRWs on the way

    • 2 replies
    • 807 views
    • 18 replies
    • 7.2k views
  4. Finally! 1 2

    • 21 replies
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    • 0 replies
    • 533 views
  5. Strike 1 2 3

    • 35 replies
    • 5.6k views
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    • 1 reply
    • 805 views
  6. Tire Fill Alert

    • 0 replies
    • 1.9k views
    • 0 replies
    • 5.3k views
  7. Door flexing

    • 3 replies
    • 873 views
  8. Tow Mirrors

    • 6 replies
    • 1.5k views
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    • 5.1k views
  9. Curb weight 1 2

    • 28 replies
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  10. 2020 3500 DRW

    • 3 replies
    • 849 views
  11. Costco Deal

    • 8 replies
    • 2k views
  12. wheel bolt pattern 2020

    • 6 replies
    • 25.7k views
    • 5 replies
    • 4.6k views
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