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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.

    5.4k
    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. 2017 GMC Sierra 2500HD Duramax SLT Video

    By BrianMello,
    • 0 replies
    • 1k views

  2. Fog light housing part number

    By EXSlider400,
    • 5 replies
    • 3.6k views

  3. 2017 Duramax Availability 1 2 3

    By Steveman,
    • 31 replies
    • 6.5k views

  4. Silverado 2500...2016 vs. 2017 1 2

    By 2014chevy2500,
    • 22 replies
    • 19.5k views

  5. Pulled the Trigger

    By 2017HD,
    • 1 reply
    • 1.1k views

  6. GMC Chevy 2500HD? 1 2 3

    By Salty Dog,
    • 30 replies
    • 5.9k views

  7. Paint Chipping in Extra Coated Area 1 2

    By IDriveATruck,
    • 17 replies
    • 11.3k views

  8. Bad Traction 1 2

    By SouthpawHD,
    • 22 replies
    • 6.8k views

  9. Plow Question 1 2

    By Skeld,
    • 19 replies
    • 13.4k views

  10. Michelin tires

    By nolega,
    • 10 replies
    • 7.3k views

  11. 2017 Regular Cab Finally Delivered

    By Jone43,
    • 3 replies
    • 1.4k views

  12. No sound from rear speakers

    By madcowranch,
    • 10 replies
    • 23.9k views

  13. 2017 Custom HD 2500

    By gmcleer,
    • 6 replies
    • 2.5k views

  14. New 2016 2500 Rumble 1 2

    By Rob2500hd,
    • 29 replies
    • 4.7k views

  15. Passenger seatbelt

    By snarkee,
    • 7 replies
    • 2.1k views

  16. National Search?

    By Salty Dog,
    • 4 replies
    • 1.2k views

  17. 2017 Gas 2500 Changes 1 2 3 4 19

    By Capt Call,
    • 270 replies
    • 91.1k views

  18. New 2016 2500

    By 16Lucho,
    • 10 replies
    • 1.9k views

  19. I got hit yesterday 1 2

    By Emtmtb,
    • 15 replies
    • 4.3k views

  20. A few pounds for winter! 1 2 3

    By Big ~O~,
    • 30 replies
    • 5.7k views

  21. Signing papers tomorrow and I have a few questions 1 2

    By isleepu,
    • 18 replies
    • 2.7k views

  22. made offer on new truck 1 2

    By 4wdriver,
    • 25 replies
    • 3.4k views

  23. WRECKED 2015 Duramax LTZ REAR ENDED! Diminished Value?

    By audioworks04,
    • 9 replies
    • 4.5k views

  24. 2500 Sierra All Terrain vs Denali

    By Jrichardson,
    • 3 replies
    • 4.6k views

  25. What oil would you use in a Duramax in extreme cold? 1 2

    By ndeepoffroad,
    • 16 replies
    • 13.8k views

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