Engines & Powertrain (Duramax & Vortec)

227 topics in this forum

1. Service theft deterrent system

   By Trevo-all, November 6, 2021
   • 0 replies
   • 5k views
   • 
   • Trevo-all
   • November 6, 2021

2. The great debate…. L5P oil

   By MichDirtyMax19, November 3, 2021
   • 6 replies
   • 10.3k views
   • 
   • Grumpy Bear
   • November 4, 2021

3. 2018 GMC Sierra Duramax 6.6

   By rvillaverde, October 20, 2021
   • 0 replies
   • 8.1k views
   • 
   • rvillaverde
   • October 20, 2021

4. Necessary minimum tire pressure

   By Ben Dover, December 6, 2020   

   • Tires
   • ride
   • (and 2 more)

     Tagged with:

     • Tires
     • ride
     • handling
     • performance
   • 14 replies
   • 18k views
   • 
   • gmacecsko
   • October 18, 2021

5. Block Heater Short Recall

   By 2017HD, July 27, 2021
   • 2 replies
   • 6k views
   • 
   • gmacecsko
   • October 18, 2021

6. Shell Rotella T6 15-40

   By gmacecsko, October 18, 2021
   • 2 replies
   • 3.9k views
   • 
   • pokismoki
   • October 18, 2021

7. Crank but no start

   By Btreadway2003, October 17, 2021
   • 0 replies
   • 3.4k views
   • 
   • Btreadway2003
   • October 17, 2021

8. Code P2297 oxygen sensor (O2) has out of range sensor performance when the vehicle is decelerating for bank 1 sensor 1

   By Robert Hahn, September 22, 2021
   • 0 replies
   • 7.3k views
   • 
   • Robert Hahn
   • September 22, 2021

9. No power to driver side lowbeam

   By Scott77, September 21, 2021
   • 1 reply
   • 1.7k views
   • 
   • shakenfake
   • September 21, 2021

10. No power to driver side lowbeam

    By Scott77, September 21, 2021
    • 0 replies
    • 1.4k views
    • 
    • Scott77
    • September 21, 2021

11. Buying 2018 2500 Denali w 25K Miles - Question Re Z71

    By sgnden, November 24, 2020
    • 2 replies
    • 3.8k views
    • 
    • 2017HD
    • August 28, 2021

12. DEF question

    By Sumrtime, August 1, 2021
    • 12 replies
    • 3k views
    • 
    • CamGTP
    • August 5, 2021

13. Reverse lights in towing mirror 1 2 3

    By Lon Bossom, November 19, 2017
    • 39 replies
    • 63.3k views
    • 
    • Redpanda123
    • July 3, 2021

14. 6.0 tune needed after exhaust mods ?

    By Jec8563, June 15, 2020
    • 8 replies
    • 7.7k views
    • 
    • RangerU
    • June 30, 2021

15. 2015 6.0 Burned Spark Plugs 1 2

    By WiscoZ71, April 5, 2020
    • 15 replies
    • 20.1k views
    • 
    • Duckman Dean
    • June 21, 2021

16. 2017 Duramax L5P base idle 1 2

    By jaws3, April 23, 2020
    • 16 replies
    • 19.1k views
    • 
    • Bbutch7179
    • June 12, 2021

17. L5p buying guide

    By Lspoo19, April 28, 2021
    • 0 replies
    • 2.6k views
    • 
    • Lspoo19
    • April 28, 2021

18. Factory Torque Specifications 2017 Silverado LTZ 3500 HD 6.6

    By JJS-2017-3500-DURAMAX, April 18, 2021
    • 0 replies
    • 2.7k views
    • 
    • JJS-2017-3500-DURAMAX
    • April 18, 2021

19. 2015 6.6 Duramax Chevy 3500 HD

    By JerryM72, April 2, 2021   

    • oil pressure sensor issues ..
    • 0 replies
    • 2.1k views
    • 
    • JerryM72
    • April 2, 2021

20. Fuel leak causing engine shutdown

    By Dernie, March 24, 2021
    • 1 reply
    • 8.3k views
    • 
    • newdude
    • March 24, 2021

21. 2015 6.0 Catalytic Converter

    By Viceroy267, February 13, 2021
    • 1 reply
    • 2.5k views
    • 
    • CamGTP
    • February 14, 2021

22. PCV reroute

    By Diver6, February 12, 2021
    • 0 replies
    • 3k views
    • 
    • Diver6
    • February 12, 2021

23. Code P21DD (Reductant Tank Heater)

    By TinkeringFox, October 15, 2018   

    • def
    • p21dd
    • (and 12 more)

      Tagged with:

      • def
      • p21dd
      • reductant
      • tank
      • heater
      • circuit
      • low
      • lml
      • cold
      • start
      • engine
      • def tank heater
      • reductant tank heater
      • fluid
    • 3 replies
    • 89.8k views
    • 
    • jjwest64
    • December 18, 2020

24. Low Oil in Diesel Engine 6.6L 1 2

    By AK_ Maverick-X3, December 1, 2020
    • 18 replies
    • 21.9k views
    • 
    • AK_ Maverick-X3
    • December 10, 2020

25. 2018 L5P reduced power and cutting out

    By Danny R, November 27, 2020   

    • loss of power
    • 0 replies
    • 5.6k views
    • 
    • Danny R
    • November 27, 2020