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

165 topics in this forum

1. Plowing with a 1.8 yard spreader?

   By Able, September 16, 2020
   • 6 replies
   • 1.6k views
   • 
   • Logan Lanfear
   • September 17, 2020

3. Enjoying the new gasser?

   By Z71RAD88, August 18, 2020
   • 12 replies
   • 3.8k views
   • 
   • Z71RAD88
   • August 26, 2020

4. I finally caved and bought a truck.

   By Pastusak.t, August 9, 2020
   • 7 replies
   • 2.4k views
   • 
   • Pastusak.t
   • August 12, 2020

5. Towing ability

   By Drumnatural, August 9, 2020
   • 2 replies
   • 1.7k views
   • 
   • ShotgunZ71
   • August 9, 2020

6. Any word on transmission or rear gearing?

   By nick112288, June 19, 2020
   • 2 replies
   • 2.3k views
   • 
   • 2017HD
   • August 9, 2020

7. New GM/Chevy Owner 6.6 Gas

   By GMdude2020, June 24, 2020
   • 9 replies
   • 9.9k views
   • 
   • Dunn
   • July 26, 2020

8. Allison transmission failure

   By CarlJ, July 11, 2020
   • 3 replies
   • 2.1k views
   • 
   • CRApex
   • July 13, 2020

9. Gasser 6.6 dual exhaust kit - post it when you find it! 1 2

   By ROOK Lucky 13, February 13, 2020
   • 15 replies
   • 6.9k views
   • 
   • MORSNO
   • July 8, 2020

10. FUEL GAUGE INACCURATE

    By rickg gmparts, June 4, 2020
    • 9 replies
    • 2.4k views
    • 
    • georgecdisc
    • June 14, 2020

11. 2020 GMC Sierra

    By Lenny Bonin 1, May 19, 2020
    • 1 reply
    • 1.4k views
    • 
    • Lenny Bonin 1
    • June 1, 2020

12. Payload question

    By Babe, January 20, 2020
    • 6 replies
    • 3k views
    • 
    • dbunke
    • May 14, 2020

13. 6.6 mpg out west

    By Remington92, March 18, 2020
    • 11 replies
    • 7k views
    • 
    • 07HD
    • May 14, 2020

14. 6.6 Gasser 1 2 3 4 8

    By gearheadesw, August 8, 2019
    • 114 replies
    • 39.7k views
    • 
    • MTU Alum
    • April 7, 2020

15. Throttle Body - 2020 6.6 Sierra- service bulletin

    By Rewopleahcim, February 23, 2020
    • 5 replies
    • 9.4k views
    • 
    • SkidooSteve12
    • March 2, 2020

16. 93 octane gas 1 2

    By texasnavy05, October 30, 2019
    • 18 replies
    • 19.6k views
    • 
    • Ray Pickle
    • November 28, 2019