6.6L Gas V8 & HD Transmission Powertrain (L8T/MYD)

186 topics in this forum

1. Breaking in new motor, oil change. 1 2

   By Hoginedgewood, August 20, 2022
   • 18 replies
   • 12.2k views
   • 
   • Pryme
   • November 4, 2022

3. Hesitation when accelerating

   By Harv3589, September 15, 2022
   • 6 replies
   • 2.6k views
   • 
   • Harv3589
   • September 29, 2022

4. Who makes the axles

   By Pryme, September 27, 2022
   • 4 replies
   • 1.6k views
   • 
   • nocturnalmotors
   • September 28, 2022

5. 2500HD gas mileage 1 2 3 4

   By BrianB65, February 24, 2022
   • 57 replies
   • 36.3k views
   • 
   • Stand By
   • September 15, 2022

6. First tow with Big Red

   By Cheekster96, August 28, 2022
   • 4 replies
   • 2.2k views
   • 
   • NE18
   • September 3, 2022

7. 7-Pin Towing Receptacle With Camera Input

   By Juan Parra, August 18, 2022   

   • camera plug
   • 2 replies
   • 4k views
   • 
   • mrjulian416
   • August 22, 2022

8. Discount on 2022?

   By Hoginedgewood, July 28, 2022
   • 4 replies
   • 1.5k views
   • 
   • SWDoodle
   • August 8, 2022

9. Pro-trailering Camera Issues

   By 1MOGAN, June 21, 2022
   • 1 reply
   • 929 views
   • 
   • GMCustomerService
   • July 22, 2022

10. 2022 gas deliveries HD from Canada

    By Richard Meyers, July 16, 2022
    • 1 reply
    • 1.2k views
    • 
    • waltman
    • July 16, 2022

11. Dealers in TX

    By Thumper7, July 15, 2022
    • 2 replies
    • 1.1k views
    • 
    • KARNUT
    • July 15, 2022

12. OH Camperpuller

    By OH Camperpuller, June 11, 2022
    • 4 replies
    • 1.6k views
    • 
    • newdude
    • June 27, 2022

13. Drivability Question

    By nocturnalmotors, May 31, 2022
    • 6 replies
    • 2k views
    • 
    • sheath
    • June 16, 2022

14. Breather Hose Location

    By nocturnalmotors, June 1, 2022
    • 6 replies
    • 1.3k views
    • 
    • nocturnalmotors
    • June 7, 2022

15. Towing with 6.6 Gas 2022 GMC 2500 AT4

    By GovernmentMotorsFan, May 31, 2022
    • 4 replies
    • 5.7k views
    • 
    • GovernmentMotorsFan
    • June 1, 2022

16. Lower Gears for Better Towing 1 2

    By Rabbittown, July 26, 2021
    • 19 replies
    • 9.5k views
    • 
    • Dracer173
    • May 27, 2022

17. Feel Good Story About the L8T Continuing to Run 1 2

    By Another JR, February 1, 2022
    • 17 replies
    • 11.2k views
    • 
    • MacLaren
    • May 20, 2022

18. 2022 Trans temp... 1 2

    By hdhp, October 9, 2021
    • 21 replies
    • 15.7k views
    • 
    • sheath
    • May 11, 2022

19. New to the forum, anyone else have this issue?

    By Cross88, September 5, 2020
    • 6 replies
    • 5k views
    • 
    • Ray Pickle
    • April 5, 2022

20. 6.6 gas engine premium fuel?

    By HP4, March 23, 2022
    • 13 replies
    • 23k views
    • 
    • sheath
    • March 24, 2022

21. What did you choose your gas gm 2500 over and why 1 2

    By CaptainMorganNC, March 16, 2021
    • 21 replies
    • 16.2k views
    • 
    • HP4
    • March 23, 2022

22. L8T twin turbo -Scoggin Dickey build 2000HP-

    By Big_D, January 31, 2022
    • 8 replies
    • 6.7k views
    • 
    • DonYukon
    • March 20, 2022

23. Feel good story about the L8T towing heavy 1 2 3 4

    By mrjulian416, December 1, 2021
    • 49 replies
    • 20.7k views
    • 
    • kenny_r
    • January 24, 2022

24. Liking the 6.6 gas 1 2 3 4 10

    By Carolina, February 6, 2020
    • 140 replies
    • 90.7k views
    • 
    • topdj
    • January 21, 2022

25. 2020 GMC 2500 HD--Wheels and Tires--OPINIONS WANTED

    By Swafford09, September 28, 2021
    • 5 replies
    • 3.2k views
    • 
    • Kjduvall
    • January 10, 2022

26. 21 Silverado 2500 HD Custom

    By Trey Eckert, December 6, 2021
    • 1 reply
    • 1.6k views
    • 
    • shakenfake
    • December 7, 2021