6.6L Duramax Diesel (L5P)

205 topics in this forum

1. A DEF Product Question 1 2

   By 2500W/T, May 7, 2020
   • 19 replies
   • 9.9k views
   • 
   • FirstAscent
   • May 17, 2020

2. Fender Flare with reflector/light for Silverado 2500?

   By STRUCTUAL_PE, April 11, 2020
   • 7 replies
   • 5.8k views
   • 
   • ChuckTaylor
   • May 9, 2020

3. Towing question? 1 2

   By mbsfgts, September 15, 2019
   • 15 replies
   • 8.9k views
   • 
   • 2500W/T
   • May 8, 2020

4. Front license plate

   By Butch59, April 25, 2020
   • 4 replies
   • 2.6k views
   • 
   • redwngr
   • April 27, 2020

5. Input - HD front springs and Z71 Pkg. 1 2

   By MesaRat, March 12, 2020
   • 24 replies
   • 4.9k views
   • 
   • MesaRat
   • April 25, 2020

6. 2020 GMC 3500 Denali (6.6) DRW

   By Bigcountry70, April 13, 2020
   • 4 replies
   • 1.9k views
   • 
   • redwngr
   • April 23, 2020

7. DEF usage. 6.6 vs 3.0 1 2

   By topgear1224, April 17, 2020
   • 18 replies
   • 24.2k views
   • 
   • topgear1224
   • April 19, 2020

8. Parts Issue for a 2019 GMC HD Denali

   By Mike Hiser, April 15, 2020
   • 2 replies
   • 1.8k views
   • 
   • davester
   • April 15, 2020

9. Question about new 2500HD Diesel tow capacity

   By fsunole33, April 9, 2020
   • 13 replies
   • 8.8k views
   • 
   • XY74
   • April 15, 2020

10. Dual Alternators and Aux Battery Questions

    By jeffd, April 1, 2020
    • 5 replies
    • 14.5k views
    • 
    • redwngr
    • April 2, 2020

11. Engine Temperature

    By rusrtytr4, February 15, 2020
    • 8 replies
    • 25.3k views
    • 
    • powerhaulic
    • March 28, 2020

12. S&B Map Sensor Spacer? Oil Filters?

    By MrGraff, March 19, 2020
    • 0 replies
    • 1.5k views
    • 
    • MrGraff
    • March 19, 2020

13. Fass fuel filter system

    By Lfod1836, March 9, 2020
    • 2 replies
    • 1.9k views
    • 
    • Lfod1836
    • March 10, 2020

14. New GM L5P Duramax parts plant

    By SilveradoX2, March 5, 2020
    • 0 replies
    • 1.2k views
    • 
    • SilveradoX2
    • March 5, 2020

15. Oil Change Interval

    By withee1319, March 1, 2020
    • 13 replies
    • 55.9k views
    • 
    • Grumpy Bear
    • March 3, 2020

16. Plug in

    By Anderc1, February 19, 2020
    • 5 replies
    • 22.5k views
    • 
    • Sask Farmboy
    • March 1, 2020

17. 2020 2500HD Denali Power Loss

    By tima0101, February 17, 2020
    • 6 replies
    • 12k views
    • 
    • Sask Farmboy
    • March 1, 2020

18. Exhaust coming into the cab

    By 426yzf, November 7, 2019
    • 2 replies
    • 1.3k views
    • 
    • Skilpot
    • February 25, 2020

19. Vibration in Steering Column

    By dkhelms, February 18, 2020
    • 2 replies
    • 1.4k views
    • 
    • Tomato
    • February 21, 2020

20. Misc Recalls - First Oil Change

    By dab5577, February 19, 2020
    • 2 replies
    • 2.6k views
    • 
    • dab5577
    • February 20, 2020

21. Please help with a towing question 1 2

    By Pfc1, August 25, 2019
    • 21 replies
    • 4.8k views
    • 
    • CNY_AT4
    • February 14, 2020

22. 2019 Chev 3500HD L5P Shutting Off

    By Pedro DeLeon Jr, August 26, 2019
    • 7 replies
    • 5.8k views
    • 
    • redwngr
    • January 30, 2020

23. rear end fluid

    By rblanch, January 16, 2020
    • 4 replies
    • 8.9k views
    • 
    • rblanch
    • January 17, 2020

24. Running wiring into cab

    By Doug59, January 3, 2020
    • 1 reply
    • 1.3k views
    • 
    • sdelam
    • January 7, 2020

25. L5P Oil Life Monitor mileage?

    By BNSF, December 16, 2019
    • 4 replies
    • 5.3k views
    • 
    • redwngr
    • December 30, 2019