Modifications & Accessories

1,140 topics in this forum

1. Auxiliary switch location

   By Tunnelgas, May 1, 2018
   • 9 replies
   • 31.2k views
   • 
   • pvanderlugt
   • July 10, 2020

2. HAM radio install. 1 2

   By spiritwalker, March 29, 2018
   • 22 replies
   • 30.3k views
   • 
   • DMPD-Retired
   • July 7, 2020

3. Horn wires in engine bay: where are they?

   By corn18, May 24, 2020
   • 2 replies
   • 8.3k views
   • 
   • paauto
   • July 5, 2020

4. 15 6.0 headers

   By cmysstailights, June 30, 2020
   • 0 replies
   • 1.2k views
   • 
   • cmysstailights
   • June 30, 2020

5. 2015 Sierra 2500HD Dual Steering Stabilizer

   By Justin Taylor, June 10, 2020
   • 2 replies
   • 3k views
   • 
   • gearheadesw
   • June 28, 2020

6. Adding Tow Mirrors 1 2

   By Kgonzalez, December 21, 2017
   • 18 replies
   • 50.3k views
   • 
   • Johnq
   • June 22, 2020

7. Power folding mirrors for 2015 WT

   By corn18, May 25, 2020
   • 11 replies
   • 9.9k views
   • 
   • corn18
   • June 21, 2020

8. What HID kit for Silverado? Advice/input needed 1 2 3

   By Kornfreak_401, March 3, 2015
   • 31 replies
   • 31.8k views
   • 
   • holi gone
   • June 20, 2020

9. Accessing Bed Rails

   By 2500HDMitch, June 19, 2020
   • 0 replies
   • 729 views
   • 
   • 2500HDMitch
   • June 19, 2020

10. Keyless entry keypad 1 2 3

    By redwngr, January 27, 2018
    • 39 replies
    • 31.7k views
    • 
    • KARNUT
    • June 17, 2020

11. Hd headers

    By cmysstailights, December 21, 2019
    • 1 reply
    • 1.1k views
    • 
    • cooldude960
    • June 17, 2020

12. 2015 gmc sierra 2500HD electric fan conversion

    By Abdulwahab Alnajdi, June 11, 2020
    • 4 replies
    • 15.6k views
    • 
    • dplarson
    • June 15, 2020

13. 2018 sierra engine and exhaust mods

    By Landolt, June 13, 2020   

    • Tvs1900
    • btr stage 1 blower cam
    • (and 1 more)

      Tagged with:

      • Tvs1900
      • btr stage 1 blower cam
      • borla exhaust
    • 1 reply
    • 1.8k views
    • 
    • Landolt
    • June 13, 2020

14. Rough country 3.5 with 22x12 and 35s?

    By zmnypit, June 6, 2020
    • 12 replies
    • 21.8k views
    • 
    • Woz
    • June 13, 2020

15. Largest tire that fits a 2018 3500 duramax 1 2 3

    By xRogrimx, October 19, 2017
    • 44 replies
    • 86.4k views
    • 
    • EasyE
    • June 11, 2020

16. Snow plow prep package, backup lamp power feed

    By Sezwhoz, July 10, 2019   

    • snow plow prep package
    • backup lights
    • (and 1 more)

      Tagged with:

      • snow plow prep package
      • backup lights
      • power feed
    • 8 replies
    • 18.8k views
    • 
    • Sezwhoz
    • June 11, 2020

17. 2015 3500 SRW swap to DRW.

    By TMassey, June 9, 2020
    • 5 replies
    • 11.1k views
    • 
    • davester
    • June 9, 2020

18. Trailer brake not working

    By Diggity Dog, May 30, 2020   

    • 2018 GMC HD
    • 5 replies
    • 10.2k views
    • 
    • Diggity Dog
    • June 8, 2020

19. Speed calibrator mess up my efi live?

    By zmnypit, June 8, 2020
    • 0 replies
    • 754 views
    • 
    • zmnypit
    • June 8, 2020

20. 2015-2019 GMC 2500HD Duramax Regular Cab Trucks

    By cotterchev, May 22, 2020
    • 1 reply
    • 1.8k views
    • 
    • 03 Cobra
    • June 3, 2020

21. 2017 2500HD Tire Size 1 2 3

    By TORCHRIDER, August 28, 2017
    • 39 replies
    • 50.7k views
    • 
    • Jacob Kuehl
    • May 28, 2020

22. Dealer Installed OEM Cab Roof Marker Lights. Question? 1 2 3 4

    By LeeDowney, July 3, 2016
    • 46 replies
    • 81.3k views
    • 
    • redwngr
    • May 24, 2020

23. Corsa Exhaust

    By corvette05, May 10, 2020
    • 3 replies
    • 1.4k views
    • 
    • newdude
    • May 23, 2020

24. 2020 HD wheels and tires on a 2016 HD model

    By Caffeinated1, May 13, 2020   

    • Wheels
    • Tires
    • (and 3 more)

      Tagged with:

      • Wheels
      • Tires
      • Fitment
      • 2020hd
      • 2016hd
    • 3 replies
    • 12.6k views
    • 
    • Caffeinated1
    • May 17, 2020

25. Cargo lamp bypass

    By Camren Ondang, May 11, 2020
    • 0 replies
    • 779 views
    • 
    • Camren Ondang
    • May 11, 2020