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Modifications & Accessories

Bumper replacements, 5th wheel hitches, auxiliary lighting, and suspension upgrades for your workhorse.

1,137 topics in this forum

  1. Installing a transmission dipstick for the 6L90 (L8T gas trucks) using factory fit GM parts. 1 2 3 4 5

    By Epsilon Plus,
    • 61 replies
    • 65.8k views

  2. ZR2/AT4X Part Numbers & Conversion Info 1 2 3

    By Epsilon Plus,
    • 38 replies
    • 20.5k views

  3. What have u done to your 2020 hd 1 2 3 4 39

    By mkeddie,
    • 578 replies
    • 303.4k views

  4. Zr2 front suspension 1 2 3 4 28

    By Joe97281,
    • 409 replies
    • 80.8k views

  5. Let's install the "upfitter switches" 1 2 3 4 16

    By blamkin86,
    • 233 replies
    • 308.9k views

  6. What 5W-30 oil brand are you using for the 6.6L gas? 1 2 3 4 15

    By SoCal Angler,
    • 220 replies
    • 68k views

  7. Leveling kits? If so, let's see them. 1 2 3 4 13

    By inquenciocha,
    • 186 replies
    • 142.9k views

  8. Anyone know part number for trailer camera that plugs into ports on rear bumper? 1 2 3 4 10

    By Sunshine39,
    • 144 replies
    • 132.7k views

  9. OEM Paint Matched Fender Flares 1 2 3 4 8

    By ApertureX,
    • 112 replies
    • 115.5k views

  10. Help W/ relocating camera port from bumper to bed for 5th wheel, 1 2 3 4 8

    By 2020_3500HD_High_Country,
    • 106 replies
    • 105.9k views

  11. Changing from halogen to LED headlights on LT, Custom, or WT trims 1 2 3 4 6

    By SkidooSteve12,   
    • 87 replies
    • 147.8k views

  12. Banks 1 2 3 4 6

    By BB&Chiveon,
    • 80 replies
    • 31.2k views

  13. Trailer Tire Pressure Monitoring System (TTPMS) 1 2 3 4 5

    By KC10Chief,
    • 71 replies
    • 77.8k views

  14. 2022 2500 gasser exhaust sound 1 2 3 4 5

    By Jettech1,
    • 68 replies
    • 17.5k views

  15. Tonneau Covers - 6'9" Standard Bed 1 2 3 4 5

    By ApertureX,
    • 68 replies
    • 19.8k views

  16. 2024 Silverado 3500 Upfitter Switches 1 2 3 4 5

    By nmorgan657,
    • 61 replies
    • 51.6k views

  17. My upfitting 1 2 3 4 5

    By mkeddie,
    • 61 replies
    • 50.8k views
    • MTB
    • MTB

  18. Converting an L8T hood to a functional L5P intake (functional hood scoop). 1 2 3 4 5

    By Epsilon Plus,
    • 60 replies
    • 30.1k views

  19. 6.6L L8T Gas Exhaust Options - MBRP, Borla... 1 2 3 4

    By powderMonkey,
    • 57 replies
    • 54.4k views

  20. 2020 2500HD tire sizing 1 2 3 4

    By Vapor Trail,
    • 56 replies
    • 78.7k views

  21. LT Tirm Navigation SD Card 1 2 3 4

    By blk04sr,
    • 56 replies
    • 19.6k views

  22. Cold Air Intake 1 2 3 4

    By Jettech1,
    • 56 replies
    • 17.2k views

  23. Install a 2nd battery 1 2 3 4

    By Ed Rose,   
    • 54 replies
    • 88.6k views

  24. Blackout Project started today 1 2 3 4

    By bass mechanic,
    • 51 replies
    • 24.3k views

  25. High Country Grill 1 2 3 4

    By texasnavy05,
    • 45 replies
    • 93.7k views
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