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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. Hitch capacity 2020 Silverado and gmc towing tags

    By Formerorange,
    • 14 replies
    • 4.2k views

  2. Towing first 500 miles? 1 2

    By Mid-Night Rider,
    • 25 replies
    • 4.2k views

  3. REG CAB LONG BED HD PIC THREAD 1 2

    By Kjduvall,
    • 24 replies
    • 4.2k views

  4. Digital Gauge Display

    By cdnSpinalTap,
    • 4 replies
    • 4.1k views

  5. 2022 Silverado 3500 brake problems

    By Chris Goins,
    • 2 replies
    • 4.1k views

  6. Lumbar Support

    By marpel,
    • 2 replies
    • 4.1k views

  7. Navigation System Conversion Kit - 84489271 / 84531832

    By RGDD,
    • 5 replies
    • 4.1k views

  8. Keep tailgate down without the cables?

    By SierraCamper,
    • 5 replies
    • 4.1k views

  9. GM FRIENDS AND FAMILY 1 2

    By SKEETER1978,
    • 18 replies
    • 4.1k views

  10. Anyone Mount a Camper on 21 Silverado 2500HD Duramax Yet?

    By tortiseshell,
    • 11 replies
    • 4.1k views

  11. 2024 Headlight Condensation

    By BCGM,
    • 7 replies
    • 4.1k views

  12. Transmission Shift Solenoid failure

    By Peter Fagan,
    • 1 reply
    • 4.1k views

  13. Wrecked Multi-Flex tailgate replacement? 1 2

    By davidm767,
    • 17 replies
    • 4.1k views

  14. I found this kind of interesting on how GM is equipping the new 2024 Custom models 1 2

    By Jettech1,
    • 21 replies
    • 4.1k views

  15. The High Country trim Chevrolet Silverado HD dials back the bold 1 2

    By Joe's 2017 Silverado,   
    • 20 replies
    • 4k views

  16. GM Authorized Accesory Dashcam

    By KCJackson1,
    • 10 replies
    • 4k views

  17. T1XX Torsion Bar Question 1 2 3

    By revrnd,
    • 30 replies
    • 4k views

  18. '21 3500 Denali Pricing...help! 1 2

    By xETERNALx,
    • 18 replies
    • 4k views

  19. 2020 denali roof style

    By Jon Brown,
    • 4 replies
    • 4k views

  20. Preparing to buy: What did you pay for your 2024 Duramax AT4 or SLT

    By Mike Ruff,
    • 8 replies
    • 4k views

  21. Why does anyone still make a 3/4 ton when you can get a 1 ton SRW with a gas motor? 1 2 3

    By UltimateToolReviews,
    • 34 replies
    • 4k views

  22. Soft paint....

    By shadow gray 2020 hd,
    • 8 replies
    • 4k views

  23. 2021 L5P 10 Speed Alliston Starting off in 2nd Gear

    By Tauro_Z71,
    • 5 replies
    • 4k views

  24. 2021 2500 HD PRICING 1 2

    By spm1us,
    • 18 replies
    • 3.9k views

  25. Infotainment acknowledgements 1 2

    By sdelam,
    • 24 replies
    • 3.9k views
    • Dunn
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