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

186 topics in this forum

1. 2023 Blacksheep? 1 2 3 4

   By IDBrett, April 28, 2023
   • 55 replies
   • 7.1k views
   • 
   • Dunn
   • May 15, 2023

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

   By Austin66, March 23, 2023
   • 16 replies
   • 2.5k views
   • 
   • Pryme
   • May 9, 2023

4. Concerns with 6 speed transmission vs 10 speed transmission? 1 2 3 4

   By Gabe Bunn, September 21, 2021
   • 55 replies
   • 52.1k views
   • 
   • Jettech1
   • April 23, 2023

5. 6.6 Direct Injection Reliability Concerns 1 2 3

   By Khoa Pham, January 18, 2021
   • 40 replies
   • 29.1k views
   • 
   • VicFirth
   • April 13, 2023

6. Want more power??

   By GMC4Zee, April 7, 2023
   • 3 replies
   • 14.4k views
   • 
   • CamGTP
   • April 8, 2023

7. L8T In Silverado Medium Duty

   By C/K Man, March 23, 2023
   • 0 replies
   • 1k views
   • 
   • C/K Man
   • March 23, 2023

8. 6.6 Gas/10 spd 0-60 video

   By CRApex, March 21, 2023
   • 5 replies
   • 6k views
   • 
   • XY74
   • March 21, 2023

9. Brand new truck-Transmission issues 1 2

   By H20ENG, April 30, 2022
   • 27 replies
   • 12k views
   • 
   • GMC4Zee
   • March 21, 2023

10. WDH or not on 1-Ton Trucks 1 2 3 4 7

    By Dr1ft3r, February 20, 2023   

    • weight distribution hitch
    • 103 replies
    • 9.2k views
    • 
    • Jettech1
    • March 14, 2023

11. GM 6L90 and 6L90E Transmission

    By rileyc, February 15, 2023
    • 1 reply
    • 10.5k views
    • 
    • newdude
    • February 15, 2023

12. Downshifting while slowing down in Tow/Haul Mode 1 2

    By Lenny_B, September 1, 2022
    • 22 replies
    • 9.3k views
    • 
    • XY74
    • January 31, 2023

13. Catch can anybody running one on the new HD 1 2 3 4

    By 2020_3500HD, August 22, 2020
    • 48 replies
    • 26.7k views
    • 
    • Pryme
    • January 30, 2023

14. Cold start one second long awful engine sound 1 2 3 4 5

    By Jettech1, December 1, 2022
    • 68 replies
    • 12.3k views
    • 
    • the wanderer
    • January 29, 2023

15. Giving the gas motor a shot 1 2

    By CRApex, January 16, 2023
    • 24 replies
    • 4.7k views
    • 
    • Jettech1
    • January 28, 2023

16. Denali vs. AT4 or SLT ride quality difference ?

    By jd720, January 14, 2023
    • 12 replies
    • 15.4k views
    • 
    • BB&Chiveon
    • January 24, 2023

17. Towing range and usuable fuel amount

    By greatmizzou, July 22, 2020
    • 12 replies
    • 5.1k views
    • 
    • Jettech1
    • January 21, 2023

18. Noise at idle 2022 silverado 2500 gasser

    By HDroofer, December 31, 2022
    • 3 replies
    • 1.5k views
    • 
    • GMCustomerService
    • January 9, 2023

19. 2022 silverado 2500 gasser operating temp

    By HDroofer, December 29, 2022
    • 9 replies
    • 1.6k views
    • 
    • HDroofer
    • January 1, 2023

20. 2022 3500HD Service 4WD and Parking Brake setting when shifting to park

    By nocturnalmotors, December 22, 2022
    • 4 replies
    • 2k views
    • 
    • nocturnalmotors
    • December 27, 2022

21. 2023 L8T 10 Speed 1 2 3 4 7

    By C/K Man, December 5, 2021
    • 104 replies
    • 58.9k views
    • 
    • gkhashem
    • December 24, 2022

22. E88 fuel

    By SuperDuper, March 21, 2022
    • 11 replies
    • 10.5k views
    • 
    • Davew277
    • December 16, 2022

23. Time from order to delivery? 1 2

    By Scrambo, November 8, 2020
    • 16 replies
    • 23.6k views
    • 
    • Davew277
    • December 15, 2022

24. 2024 GM HD production

    By Doodle, December 7, 2022
    • 5 replies
    • 1.6k views
    • 
    • Jettech1
    • December 13, 2022

25. Differential fluid 1 2

    By HarrisonF, December 8, 2022
    • 24 replies
    • 8.4k views
    • 
    • Grumpy Bear
    • December 11, 2022

26. 6.6 Fuel Requirements 1 2

    By JimBuck, September 30, 2020
    • 24 replies
    • 23.6k views
    • 
    • Doodle
    • December 9, 2022