6.6L Gas V8 (L8T)

257 topics in this forum

1. '24 2500HD Gasser Allison 10spd Valve Body Issue 1 2

   By silversteverado, August 18, 2024
   • 23 replies
   • 8.7k views
   • 
   • Chevyfan3
   • February 25, 2025

2. Which oil filter, not so simple! 1 2 3 4 14

   By Pryme, September 26, 2022
   • 206 replies
   • 69.9k views
   • 
   • customboss
   • February 20, 2025

3. I Installed the (6L90E) PML transmission pan - report

   By mrjulian416, January 28, 2025
   • 5 replies
   • 5.3k views
   • 
   • Pryme
   • February 18, 2025

4. Cold weather

   By lundimpact1775, January 21, 2025
   • 6 replies
   • 2.5k views
   • 
   • Ry Guy
   • February 17, 2025

5. L8T Future?

   By C/K Man, January 23, 2025
   • 2 replies
   • 2.1k views
   • 
   • C/K Man
   • January 24, 2025

6. Oil question 1 2

   By Npd15, October 17, 2024
   • 27 replies
   • 19.1k views
   • 
   • lineman1234
   • January 24, 2025

7. Rotational Tick at 1300-1500 RPM Chevy 6.6 Gas

   By Charlie McMahon, January 22, 2025
   • 0 replies
   • 944 views
   • 
   • Charlie McMahon
   • January 22, 2025

8. How reliable is the 6.6 gasser? 1 2 3 4 6

   By HyperX, February 8, 2024
   • 78 replies
   • 139.6k views
   • 
   • lineman1234
   • January 21, 2025

9. 2025 2500 HD Duramax Leaking tranmission

   By Derek Smay, January 16, 2025
   • 5 replies
   • 4.2k views
   • 
   • Another JR
   • January 18, 2025

10. Towing with or without a WD hitch/sway control?

    By switters, August 30, 2024
    • 11 replies
    • 3k views
    • 
    • UWSkier
    • January 13, 2025

11. Oil Consumption 1 2 3

    By waltman, January 12, 2023
    • 42 replies
    • 39.1k views
    • 
    • Ben Jardine
    • January 9, 2025

12. 285/65R20 on stock rims

    By Icutmetl, December 24, 2024
    • 6 replies
    • 5k views
    • 
    • Truston Gunter
    • January 7, 2025

13. 2024 2500 transmission leak 1 2 3 4

    By stympyctlan, June 23, 2023
    • 45 replies
    • 30k views
    • 
    • lineman1234
    • January 4, 2025

14. diesel to gas

    By buelldude, December 10, 2024
    • 9 replies
    • 2.2k views
    • 
    • Another JR
    • December 30, 2024

15. 86 octane with 10% ethanol.

    By lineman1234, December 19, 2024
    • 4 replies
    • 1.8k views
    • 
    • lineman1234
    • December 23, 2024

16. 2024 10 speed vibration in 9th gear

    By UWSkier, December 18, 2024
    • 0 replies
    • 835 views
    • 
    • UWSkier
    • December 18, 2024

17. 22 gas transmission service

    By Hoginedgewood, December 1, 2024
    • 10 replies
    • 3.9k views
    • 
    • AndrewF
    • December 13, 2024

18. Preventive maintenance and mods to extend life

    By Christopher Wadeson, December 4, 2024
    • 2 replies
    • 3.2k views
    • 
    • redwngr
    • December 10, 2024

19. 2020 chev silverado 2500 hd growling noise during acceleration from somewhere in front 1 2

    By Bruce proko, January 19, 2024
    • 15 replies
    • 8.5k views
    • 
    • Bsggsb
    • December 1, 2024

20. How many fuel pumps will this engine eat?

    By Jeater, September 30, 2021
    • 8 replies
    • 18.7k views
    • 
    • lundimpact1775
    • November 18, 2024

21. display went blank

    By Traumajunkie, November 8, 2024
    • 0 replies
    • 573 views
    • 
    • Traumajunkie
    • November 8, 2024

22. scan gauge 3 1 2 3 4 5

    By Gregg Staples, December 1, 2023
    • 74 replies
    • 10.1k views
    • 
    • Capt Bob
    • November 7, 2024

23. 2023 6.6L gas single exit black tip cat back system 1 2

    By reb0957, June 11, 2023
    • 17 replies
    • 8.6k views
    • 
    • revrnd
    • November 2, 2024

24. 2020 2500Hd feels like it is surging when towing a hill 1 2

    By Addison Reeder IV, November 14, 2020
    • 22 replies
    • 17.8k views
    • 
    • zmania99
    • October 27, 2024

25. AC Delco Oil Filter PF63... Questions on Filter Revisions.... 1 2 3

    By SoCal Angler, October 9, 2024
    • 44 replies
    • 46.1k views
    • 
    • lineman1234
    • October 22, 2024