6.6L Gas V8 (L8T)

256 topics in this forum

1. Power steering leak

   By Michael Schulz, December 14, 2023
   • 5 replies
   • 3.1k views
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   • rjgvt
   • December 16, 2023

2. 10 Speed Allison vs 6 Speed MPG 1 2

   By mtbadbob, November 14, 2023
   • 16 replies
   • 18.9k views
   • 
   • MORSNO
   • November 19, 2023

3. Easy Oil Change

   By Texas Gasser, November 5, 2023
   • 6 replies
   • 14.5k views
   • 
   • SoCal Angler
   • November 10, 2023

4. Cameras and trailering app help

   By Tfkkolar, August 9, 2023
   • 1 reply
   • 2.1k views
   • 
   • loghead
   • October 29, 2023

5. 2020 Silverado 2500 HD

   By Trey249, October 20, 2023
   • 0 replies
   • 1.4k views
   • 
   • Trey249
   • October 20, 2023

6. Edge CTS3

   By Gregg Staples, October 18, 2023
   • 8 replies
   • 3.4k views
   • 
   • Gregg Staples
   • October 19, 2023

7. Camper towing report after 3200 miles 1 2 3

   By UWSkier, August 9, 2023
   • 31 replies
   • 16.7k views
   • 
   • Pryme
   • October 17, 2023

8. 6.6L gas, will it disappoint?? 1 2

   By kylant, September 22, 2023
   • 25 replies
   • 8.5k views
   • 
   • Jettech1
   • October 13, 2023

9. To Dipstick or NOT To Dipstick The 6 Speed Trans

   By SoCal Angler, September 16, 2023
   • 6 replies
   • 3.8k views
   • 
   • the8rotor
   • September 27, 2023

10. E85 Option

    By C/K Man, September 20, 2023
    • 1 reply
    • 2.8k views
    • 
    • MTU Alum
    • September 21, 2023

11. Mobil 1 - Which Flavor for Towing...ESP, Truck/SUV, AFS?

    By SoCal Angler, August 31, 2023
    • 10 replies
    • 4.6k views
    • 
    • SoCal Angler
    • September 5, 2023

12. Perhaps I have missed this in prior conversations concerning the 10 speed behind the gasser. 1 2

    By Jettech1, May 13, 2023
    • 23 replies
    • 13.7k views
    • 
    • Dunn
    • September 2, 2023

13. Towing AFTER First 500 miles...Oil Change?

    By SoCal Angler, August 14, 2023
    • 2 replies
    • 4.7k views
    • 
    • SoCal Angler
    • August 18, 2023

14. 2023 GMC Sierra 3500HD 6.6L Gas/6 Speed - Trans Temps? 1 2 3

    By SoCal Angler, August 6, 2023
    • 44 replies
    • 10.8k views
    • 
    • SoCal Angler
    • August 12, 2023

15. Best Cold Air Inatke 6.6 Gasser

    By MacLaren, July 7, 2023
    • 5 replies
    • 4.8k views
    • 
    • 2021 HD
    • August 10, 2023

16. 2024 GMC 2500 AT4 Gas 1 2 3 4

    By SWDoodle, February 27, 2023
    • 52 replies
    • 18.4k views
    • 
    • Doodle
    • July 13, 2023

17. S&B Cold Air Intake

    By MacLaren, July 7, 2023
    • 2 replies
    • 2.6k views
    • 
    • MacLaren
    • July 8, 2023

18. 2021 Silverado 2500 HD review

    By MacLaren, July 8, 2023
    • 0 replies
    • 3.5k views
    • 
    • MacLaren
    • July 8, 2023

19. 2021 2500 HD downshift clunk

    By SteveSr, May 20, 2021
    • 8 replies
    • 10.8k views
    • 
    • MacLaren
    • July 7, 2023

20. Pros and Cons of Installing Later Transmission Thermostat with Lower Opening Temperature 1 2 3 4 6

    By Another JR, August 16, 2022
    • 80 replies
    • 18.5k views
    • 
    • Jettech1
    • June 24, 2023

21. 2024 Gasser/Allison First Tow Report 1 2

    By the8rotor, May 23, 2023
    • 20 replies
    • 15.2k views
    • 
    • 64BAwagon
    • June 17, 2023

22. GM Truck HD New Engine Next Gen

    By Red Armor Oil, June 6, 2023
    • 3 replies
    • 2.4k views
    • 
    • Ry Guy
    • June 6, 2023

23. Here's a great video with the new 10 speed behind the gasser towing a 15k fifth wheel. I'm impressed! 1 2 3

    By Jettech1, May 11, 2023
    • 39 replies
    • 7.9k views
    • 
    • Jettech1
    • May 25, 2023

24. 2023 Blacksheep? 1 2 3 4

    By IDBrett, April 28, 2023
    • 55 replies
    • 11.7k views
    • 
    • Dunn
    • May 15, 2023

25. WT (or Pro), dlb cab long bed gasser availability, Please Educate Me 1 2

    By Austin66, March 23, 2023
    • 16 replies
    • 3.3k views
    • 
    • Pryme
    • May 9, 2023