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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. 2024 Color Availability

    By Robbie R,
    • 5 replies
    • 2.6k views

  2. This is what actually concerns me so much these days.

    By Jettech1,
    • 1 reply
    • 1.2k views

  3. 2024 2500 HD w/ BAKFLIP MX4

    By Awedin,
    • 0 replies
    • 1.5k views

  4. Dealer Allocations; how do I get the truck I want?

    By AngelPhoenix,
    • 10 replies
    • 6k views

  5. GMC 3500 HD Door Illuminated Sill Plate Instructions

    By AlaskaTrip,
    • 0 replies
    • 2.8k views

  6. Couple cool things and first 400 miles, impressionable thoughts of the 24' HD 1 2 3 4 5

    By Leonardo Willi,
    • 74 replies
    • 9.9k views

  7. Who designs these parking lots? for what, Munchkin cars? 1 2

    By Leonardo Willi,
    • 24 replies
    • 3.7k views

  8. 2024 GMC Sierra SLE With Bucket Seats?

    By Haoleguy,
    • 5 replies
    • 5.3k views

  9. What is a safe gap for the 5th wheels from the bed rails?

    By Jettech1,
    • 9 replies
    • 1.2k views

  10. Trailer TPMS system

    By Sumrtime,
    • 0 replies
    • 652 views

  11. Seeing another 2020 plus year HD on the road surprises me at times. 1 2

    By Jettech1,
    • 23 replies
    • 2.3k views

  12. Does anyone know what part # tpms works for 2023 trucks?

    By DuckBoi,
    • 2 replies
    • 1.1k views

  13. I want to brag a bit concerning the HD brakes. 1 2 3

    By Jettech1,
    • 39 replies
    • 4.8k views

  14. How's the ordering/delivery going? Recently found out my 2022/2023/ is now going to be a 2024? and a rumor??? 1 2 3 4 5

    By Leonardo Willi,
    • 71 replies
    • 20k views

  15. I must be weird; Long Bed SRW 1 2 3

    By IDBrett,
    • 44 replies
    • 7.3k views

  16. Weird Camper brake problem... 1 2 3 4

    By Jettech1,
    • 53 replies
    • 8.4k views

  17. New old 2022s 1 2

    By Jettech1,
    • 28 replies
    • 3.4k views

  18. 0 to 60 with the gasser and Allison combo 1 2 3 4 5

    By Jettech1,
    • 71 replies
    • 28.9k views

  19. What 33 years makes...

    By gemarsh,
    • 3 replies
    • 1.2k views

  20. HD ZR2 and Bison look awesome

    By dal1980,
    • 9 replies
    • 2k views

  21. It appears Lasfit is now making LED tail lights and reverse lights. I must buy them... 1 2 3

    By Jettech1,
    • 33 replies
    • 5.7k views

  22. This is one of the many reasons we buy our HD trucks 1 2

    By Jettech1,
    • 21 replies
    • 3.3k views

  23. 2021 Sierra doors Auto Unlock in Park

    By grady475,
    • 1 reply
    • 766 views

  24. 2wd got big! Also Custom no keyless entry but push button start seems dumb?

    By nick112288,
    • 10 replies
    • 1.8k views

  25. Love The New 2024 2500 HD LT

    By Texas Gasser,
    • 10 replies
    • 10.1k views
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