6.6L (LML/L5P) & 6.0L (L96/LC8) Tech

139 topics in this forum

1. 2015 brake job

   By ryanhardy, October 7, 2018
   • 8 replies
   • 645 views
   • 
   • dozerboy
   • February 12

2. 2015 Duramax: Cold Oil Pressure Bounces Off "0"

   By jasonvp, January 31
   • 4 replies
   • 100 views
   • 
   • redwngr
   • February 10

3. Which Engine Oil (conventional or synthetic)

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   • 4

   By WireBender, June 18, 2017
   • 48 replies
   • 29,638 views
   • 
   • Cowpie
   • February 10

4. 6.0 oil change interval

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   • 4

   By 07Serria, October 7, 2018
   • 53 replies
   • 1,843 views
   • 
   • Cowpie
   • February 8

5. Diesel Regeneration

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   • 3

   By Whip, July 12, 2015
   • 37 replies
   • 12,358 views
   • 
   • avalonandl
   • February 4

6. '17 2500hd 6.0L Long Tube Headers?

   • 1
   • 2

   By Biggerdogg01, January 5
   • 18 replies
   • 608 views
   • 
   • EZTundra77
   • February 3

7. No sound from speakers

   By Jinbama, January 29
   • 0 replies
   • 78 views
   • 
   • Jinbama
   • January 29

8. 6.0 Oil

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   • 3

   By WANNAFARM2, October 25, 2018
   • 34 replies
   • 1,303 views
   • 
   • Cowpie
   • January 8

9. 2015 6.0 Drivetrain Clunking?

   By WiscoZ71, August 3, 2018
   • 9 replies
   • 707 views
   • 
   • Biggerdogg01
   • January 5

10. New to me 2015 Denali hd diesel

    By cperk, January 3
    • 4 replies
    • 188 views
    • 
    • gearheadesw
    • January 3

11. Fuel Mileage L5P

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    By Peterd, July 23, 2017
    • 21 replies
    • 13,003 views
    • 
    • Cowpie
    • December 25, 2018

12. DEF heater failure and engine light

    • 1
    • 2

    By Jnich17, November 10, 2017   

    • 2015 duramax
    • 19 replies
    • 8,406 views
    • 
    • Mikey52
    • December 3, 2018

13. Reverse lights in towing mirror

    By Lon Bossom, November 19, 2017
    • 13 replies
    • 8,506 views
    • 
    • Biggerdogg01
    • December 2, 2018

14. Opinions on towing?

    • 1
    • 2
    • 3

    By 2017DenaliHDChris, June 6, 2018
    • 35 replies
    • 3,190 views
    • 
    • Waaazooo
    • November 23, 2018

15. 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
    • 1 reply
    • 8,632 views
    • 
    • avalonandl
    • October 25, 2018

16. 2018 L5P sudden loss of power and shut off

    By 480Ruger, May 22, 2018   

    • l5p
    • loss of power
    • (and 1 more)

      Tagged with:

      • l5p
      • loss of power
      • 2018
    • 7 replies
    • 2,484 views
    • 
    • gearheadesw
    • October 13, 2018

17. Short tube and long tube

    By Texas45, October 12, 2018   

    • headers
    • 2015
    • (and 4 more)

      Tagged with:

      • headers
      • 2015
      • 2500
      • 6.0
      • shorttube
      • long tube
    • 4 replies
    • 406 views
    • 
    • Slizzo
    • October 12, 2018

18. Short tube and long tube

    By Texas45, October 12, 2018   

    • headers
    • 2015
    • (and 4 more)

      Tagged with:

      • headers
      • 2015
      • 2500
      • 6.0
      • shorttube
      • long tube
    • 0 replies
    • 236 views
    • 
    • Texas45
    • October 12, 2018

19. Trailer disconnected connected on dash

    By cmysstailights, July 18, 2018
    • 14 replies
    • 827 views
    • 
    • cmysstailights
    • October 4, 2018

20. Drive train vibration

    By asaxby, June 1, 2018
    • 9 replies
    • 1,012 views
    • 
    • Barak
    • October 3, 2018

21. Drive Shaft Vibration 68-78 mph

    By whitlecj, July 27, 2018
    • 5 replies
    • 615 views
    • 
    • DMAXNAZ
    • October 1, 2018

22. Fuel

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    By Waaazooo, May 26, 2018
    • 19 replies
    • 1,606 views
    • 
    • redwngr
    • September 30, 2018

23. AC Delco filters suck

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    By gearheadesw, June 18, 2017
    • 50 replies
    • 6,080 views
    • 
    • gearheadesw
    • September 30, 2018

24. 2016 Silverado 2500 6.0 with Corsa

    By SOTO3389, April 13, 2018
    • 8 replies
    • 1,967 views
    • 
    • Black02Silverado
    • September 30, 2018

25. cp4 injector pump failed

    By HOLMAN391, September 10, 2018   

    • def
    • cp4 failure
    • (and 2 more)

      Tagged with:

      • def
      • cp4 failure
      • gm buyback
      • lml
    • 2 replies
    • 543 views
    • 
    • silveradosid
    • September 11, 2018