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

186 topics in this forum

1. 2024 2500 transmission leak 1 2 3

   By stympyctlan, June 23, 2023
   • 39 replies
   • 18.3k views
   • 
   • Chevyfan3
   • 17 hours ago

3. How many fuel pumps will this engine eat?

   By Jeater, September 30, 2021
   • 8 replies
   • 11.9k views
   • 
   • lundimpact1775
   • Monday at 11:59 PM

4. How reliable is the 6.6 gasser? 1 2 3 4 5

   By HyperX, February 8
   • 65 replies
   • 35.4k views
   • 
   • bruceb58
   • November 12

5. Normal L8T noises?

   By BuckWallace, October 27, 2023
   • 14 replies
   • 4.7k views
   • 
   • KellyMoore
   • November 8

6. display went blank

   By Traumajunkie, November 8
   • 0 replies
   • 133 views
   • 
   • Traumajunkie
   • November 8

7. scan gauge 3 1 2 3 4 5

   By Gregg Staples, December 1, 2023
   • 74 replies
   • 6.1k views
   • 
   • Capt Bob
   • November 7

8. 2020 chev silverado 2500 hd growling noise during acceleration from somewhere in front

   By Bruce proko, January 19
   • 12 replies
   • 2.3k views
   • 
   • nocturnalmotors
   • November 7

9. 2023 6.6L gas single exit black tip cat back system 1 2

   By reb0957, June 11, 2023
   • 17 replies
   • 5.7k views
   • 
   • revrnd
   • November 2

10. 2020 2500Hd feels like it is surging when towing a hill 1 2

    By Addison Reeder IV, November 14, 2020
    • 22 replies
    • 13.5k views
    • 
    • zmania99
    • October 27

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

    By SoCal Angler, October 9
    • 44 replies
    • 2.3k views
    • 
    • lineman1234
    • October 22

12. Oil question

    By Npd15, October 17
    • 9 replies
    • 717 views
    • 
    • diyer2
    • October 21

13. Pulsar LT, anybody using one?

    By Sonders, October 18
    • 1 reply
    • 329 views
    • 
    • TS423
    • October 19

14. L8T dead on the highway 92k miles 1 2

    By lundimpact1775, September 30
    • 17 replies
    • 1.5k views
    • 
    • lundimpact1775
    • October 11

15. Strongly considering 3500 Reg Cab camper build

    By jrubicon, September 23
    • 3 replies
    • 564 views
    • 
    • Cofage Gaetaph
    • October 10

16. 2024 10-Speed Transmission Service 1 2 3

    By ssgballistics, August 24
    • 30 replies
    • 2.5k views
    • 
    • Another JR
    • September 19

17. 2024 Silverado ZR2 2500 6.6L gas engine failure 1 2 3

    By Eric.V, April 4
    • 33 replies
    • 13.6k views
    • 
    • Hector S
    • September 18

18. I would like to start a NEW catch can post for all to follow. 1 2 3 4 6

    By Jettech1, January 30, 2023
    • 88 replies
    • 13.7k views
    • 
    • lineman1234
    • September 16

19. "Allison" 10 speed hard upshift gears 7-8 1 2

    By UWSkier, June 25
    • 21 replies
    • 2.9k views
    • 
    • UWSkier
    • September 12

20. 2020 L8T 2500 Transmission Temperature Reaches 230 while towing

    By allycat75, September 8
    • 4 replies
    • 685 views
    • 
    • Another JR
    • September 9

21. Add engine oil!!! 1 2 3 4 17

    By Truston Gunter, December 15, 2021
    • 242 replies
    • 61.2k views
    • 
    • Antny
    • September 5

22. 6.6 GAS with 37 inch tires

    By Tyler Marchak, August 26
    • 6 replies
    • 997 views
    • 
    • Pryme
    • September 3

23. Are the 6.6 l8t engines inherently noisy? 1 2 3

    By DuckBoi, May 10, 2023
    • 42 replies
    • 11.3k views
    • 
    • D Ray
    • September 1

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

    By switters, August 30
    • 6 replies
    • 634 views
    • 
    • Pryme
    • August 30

25. '24 2500HD Gasser Allison 10spd Valve Body Issue

    By silversteverado, August 18
    • 13 replies
    • 1.3k views
    • 
    • lineman1234
    • August 29

26. 2024 Tranmission Temps

    By Bstevens1084, July 16
    • 10 replies
    • 1.2k views
    • 
    • bruceb58
    • August 28