Duramax Diesel & 8.1L Big Block

585 topics in this forum

1. Shifting. From automatic to manual mode on the go down step grades.

   By Charles Lina, September 9, 2019
   • 2 replies
   • 781 views
   • 
   • diyer2
   • September 10, 2019

2. 4wd help

   By myHD truck, August 18, 2019
   • 8 replies
   • 777 views
   • 
   • myHD truck
   • August 20, 2019

3. 2500 HD airbag and injector codes

   By DieselNewbie, October 20, 2019
   • 0 replies
   • 773 views
   • 
   • DieselNewbie
   • October 20, 2019

4. Painting Alum wheels

   By Steve-Maine, October 1, 2018
   • 2 replies
   • 767 views
   • 
   • Steve-Maine
   • October 3, 2018

5. Steering fitment on 1500hd from 2500

   By Fabio_90, May 24, 2020
   • 0 replies
   • 762 views
   • 
   • Fabio_90
   • May 24, 2020

6. Wanting my first lift can’t decide what one to get 4” or 6” and brand

   By thedemoncowboy, May 18, 2020
   • 1 reply
   • 757 views
   • 
   • Niners 365
   • May 18, 2020

7. 2009 2500HD 4x4 Intermittent Clunk

   By Jonesy 406, November 29, 2020
   • 0 replies
   • 757 views
   • 
   • Jonesy 406
   • November 29, 2020

8. Internal Electrical Issues

   By Michael Damron, August 31, 2020
   • 1 reply
   • 753 views
   • 
   • davester
   • August 31, 2020

9. Chasis specs needed for flat bed build

   By ChestyBPuller, December 17, 2020   

   • Sierra 3500 sle
   • 1 reply
   • 747 views
   • 
   • CamGTP
   • December 17, 2020

10. Axle actuator pigtail ripped off. Need wire to pin colors.

    By Obmar, November 23, 2020
    • 0 replies
    • 744 views
    • 
    • Obmar
    • November 23, 2020

11. warning water in full filter light

    By Steve-Maine, March 10, 2025
    • 0 replies
    • 744 views
    • 
    • Steve-Maine
    • March 10, 2025

12. Window washer not working

    By Greghollopeter, November 21, 2020
    • 0 replies
    • 742 views
    • 
    • Greghollopeter
    • November 21, 2020

13. whats the maf sensor

    By Mike Fleck, August 15, 2020
    • 2 replies
    • 742 views
    • 
    • carkhz316
    • August 15, 2020

14. 6.6 serious drop in mileage while towing

    By TNCannons, August 29, 2019   

    • powertrain. transmission
    • 4 replies
    • 739 views
    • 
    • 2017Darkness
    • August 29, 2019

15. 6.0 question

    By Medic610, January 24, 2020
    • 6 replies
    • 735 views
    • 
    • davester
    • February 28, 2020

16. Re-centering SIR or clockspring...

    By Draz, October 31, 2019
    • 0 replies
    • 732 views
    • 
    • Draz
    • October 31, 2019

17. Electronic

    By Rconard, January 20, 2021
    • 0 replies
    • 728 views
    • 
    • Rconard
    • January 20, 2021

18. 2006 GMC 2500HD Hitching hot wire to center terminal in trailer wiring connecter

    By Steve-Maine, November 6, 2025
    • 1 reply
    • 725 views
    • 
    • carkhz316
    • November 23, 2025

19. Light issues

    By 62Deuce11, September 26, 2020
    • 3 replies
    • 721 views
    • 
    • 62Deuce11
    • September 26, 2020

20. 4l80e locks rear tires

    By Tylor Ingalls, March 8, 2025
    • 1 reply
    • 721 views
    • 
    • mjm-1957
    • March 9, 2025

21. Cam sensor

    By AS MY WORLD TURNS, May 16, 2020   

    • Cam sensor
    • Cam code
    • (and 1 more)

      Tagged with:

      • Cam sensor
      • Cam code
      • Back probing cam sensor
    • 1 reply
    • 715 views
    • 
    • davester
    • May 16, 2020

22. Need help.. desperately

    By Kylee Casey, November 25, 2017
    • 0 replies
    • 715 views
    • 
    • Kylee Casey
    • November 25, 2017

23. G80 locker 2004 2500hd

    By Catmanchris, June 3, 2025
    • 2 replies
    • 705 views
    • 
    • Z45
    • June 7, 2025

24. Transfer case selector switch and control module testing

    By tetonspark, November 27, 2019
    • 1 reply
    • 696 views
    • 
    • Meckmonkey1
    • January 6, 2020

25. Please help batteries keep dying

    By 03silveradolb7, January 5, 2019
    • 0 replies
    • 694 views
    • 
    • 03silveradolb7
    • January 5, 2019