6.6L Duramax Diesel (L5P)

205 topics in this forum

1. 2020+ 3500 HD CCSB Denali Duramax RGAWR?

   By 20151500SLT, November 22, 2021
   • 2 replies
   • 2.1k views
   • 
   • 20151500SLT
   • November 23, 2021

2. Truck showing no trailer connected.

   By PaulEC, November 5, 2021
   • 3 replies
   • 6.7k views
   • 
   • XY74
   • November 8, 2021

3. Game Changer - Banks PedalMonster

   By u3putt, January 21, 2021
   • 11 replies
   • 18.6k views
   • 
   • rickmazz
   • November 2, 2021

4. Fuel Filter - 2021 L5P

   By Laidback, June 7, 2021
   • 8 replies
   • 13.1k views
   • 
   • shadow gray 2020 hd
   • October 5, 2021

5. Questions for a Diesel Tuner

   By 2500W/T, August 23, 2021
   • 2 replies
   • 2.2k views
   • 
   • shakenfake
   • October 4, 2021

6. Tuners Wanted

   By 2500W/T, October 2, 2021
   • 1 reply
   • 1.5k views
   • 
   • redwngr
   • October 3, 2021

7. Trailer running light fault

   By GotDog, September 29, 2021
   • 0 replies
   • 1.2k views
   • 
   • GotDog
   • September 29, 2021

8. What did you pay for your 2020 truck 1 2 3

   By Ronnell Roegner, July 11, 2020
   • 43 replies
   • 22.5k views
   • 
   • yaswanth reddy
   • September 7, 2021

9. Service Mode

   By ekbruster, September 4, 2021
   • 1 reply
   • 4.6k views
   • 
   • newdude
   • September 4, 2021

10. 10L1000 Trans Fluid Filter

    By 2500W/T, August 31, 2021
    • 2 replies
    • 5.2k views
    • 
    • 2500W/T
    • September 2, 2021

11. 2020 2500 vs 3500 hd diesel 1 2

    By Akwagon, June 25, 2020
    • 28 replies
    • 15.5k views
    • 
    • 2500W/T
    • September 2, 2021

12. looking for engine oil add trick

    By iflypigs, July 16, 2021
    • 8 replies
    • 14.8k views
    • 
    • dgstarr63
    • August 31, 2021

13. fifth wheel hitch

    By Mardo, March 13, 2021
    • 12 replies
    • 7.6k views
    • 
    • 2500W/T
    • August 30, 2021

14. Transfer case leak 3274 miles

    By Bones454, August 23, 2021
    • 4 replies
    • 3.3k views
    • 
    • Bones454
    • August 30, 2021

15. Terrible highway pulling power

    By Trent Gonzalez, June 9, 2021
    • 7 replies
    • 8k views
    • 
    • Jrscrib
    • August 22, 2021

16. Newbie looking for info.

    By Sumrtime, August 13, 2021
    • 1 reply
    • 1.7k views
    • 
    • XY74
    • August 14, 2021

17. 2021 2500 AT4 payload

    By Mardo, March 11, 2021
    • 8 replies
    • 7.4k views
    • 
    • redwngr
    • August 11, 2021

18. ibanks 1.8

    By Laidback, July 29, 2021
    • 3 replies
    • 2.2k views
    • 
    • Random
    • August 10, 2021

19. OEM Steel Rim Size

    By 2500W/T, July 24, 2021
    • 3 replies
    • 1k views
    • 
    • 2500W/T
    • August 2, 2021

20. Oem 5th wheel puck system

    By Eric Griem, July 12, 2021
    • 2 replies
    • 6.4k views
    • 
    • 2500W/T
    • July 30, 2021

21. 35'S ON 2020 2500

    By scoott, June 16, 2021
    • 2 replies
    • 3.4k views
    • 
    • kylant
    • July 24, 2021

22. Killing a Duramax

    By 2500W/T, July 30, 2020
    • 14 replies
    • 7.1k views
    • 
    • Darth
    • June 21, 2021

23. 3 inch cognito lift

    By ND763, March 24, 2021
    • 2 replies
    • 3.8k views
    • 
    • Dave M.
    • June 5, 2021

24. Transmission

    By Mat gruber, May 18, 2021
    • 2 replies
    • 3.4k views
    • 
    • Laidback
    • May 24, 2021

25. Garage Door Opener - No Power

    By 2506S, May 13, 2021
    • 0 replies
    • 1.1k views
    • 
    • 2506S
    • May 13, 2021