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2015-2019 Silverado HD, Sierra HD & Medium Duty

The heavy haulers. Discussion for the 2500HD / 3500HD and the 4500HD / 5500HD / 6500HD chassis cabs.

Subforums

  1. Modifications & Accessories

    Bumpers, towing mirrors, and suspension upgrades.

    10.3k
    posts

  2. Troubleshooting & Recalls

    Diagnose DEF heater failures, CP4 pumps, and electrical issues.

    5.5k
    posts

  3. Engines & Powertrain (Duramax & Vortec)

    Technical discussion for the 6.6L Duramax (LML / L5P) and the 6.0L Gas V8 (L96 / LC8). Covers the Allison 1000 and 6L90 transmissions.

    2.8k
    posts

1,665 topics in this forum

  1. Reverse wire for backup camera.

    By 94yj,
    • 4 replies
    • 7.9k views

  2. 2019 GMC SIERRA DENALI HD 1 2

    By Kathy Donofrio Wheeler,   
    • 20 replies
    • 6.2k views

  3. Wheel/Tire thoughts for stock height 3500 SRW

    By pdscfx,   
    • 3 replies
    • 6.2k views

  4. rear axle noise

    By i82much,
    • 9 replies
    • 18k views

  5. 2019 Silverado 2500HD Duramax [Video]

    By BrianMello,   
    • 0 replies
    • 906 views

  6. for those with aftermarket backup cameras

    By 94yj,
    • 0 replies
    • 585 views

  7. XM reception

    By LynS76,   
    • 0 replies
    • 722 views

  8. fog and headlight leds 1 2 3 4 5

    By dynoray,
    • 62 replies
    • 10.8k views

  9. 2018 silverado drivers window wind/air leak noise

    By Tazman18,
    • 4 replies
    • 6.2k views

  10. 2016 Duramax regen indication

    By Mike Hamm,
    • 6 replies
    • 24k views

  11. Bed has shifted to drivers side

    By Plumber101010,   
    • 2 replies
    • 2.7k views

  12. Best tire PSI? 1 2 3

    By Cmillerjr,
    • 31 replies
    • 43.3k views

  13. 2017 GMC Sierra Denali 3500HD Parts

    By RyF,
    • 7 replies
    • 1.8k views
    • RyF
    • RyF

  14. Cover large lower grill opening 1 2

    By kcmusa,   
    • 24 replies
    • 17.6k views

  15. Swapping out Rancho for adjustable shocks for smooth ride in the city and stiffer when hauling

    By Behemoth,
    • 7 replies
    • 3.3k views

  16. dumb question

    By Neb15,
    • 4 replies
    • 1k views

  17. Who's Chapped? Me, that's who. 1 2

    By deminimis,
    • 22 replies
    • 2.9k views

  18. OBDII plug and turbo boost

    By Revspan,
    • 3 replies
    • 872 views

  19. Is there enough wire to flip over the trailer plug in?

    By AJE,
    • 4 replies
    • 1.7k views

  20. Post photos of your reg cab 2500/3500 HD's with running boards

    By 94yj,
    • 1 reply
    • 727 views

  21. Burning smell in cab followed by exploding rear window 1 2

    By Philip Gilmore,
    • 20 replies
    • 16.3k views

  22. Off road driving on long island

    By Grumpy Tooch,
    • 2 replies
    • 805 views

  23. Gas vs. Diesel, please read 1st 1 2 3 4

    By StevePT,
    • 59 replies
    • 22.3k views

  24. DEF Frustration

    By motolover95,   
    • 6 replies
    • 15.4k views

  25. Shock Install

    By Paulismydog,
    • 9 replies
    • 18.5k views

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