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

135 topics in this forum

1. Which Engine Oil (conventional or synthetic)

   • 1
   • 2
   • 3
   • 4

   By WireBender, June 18, 2017
   • 46 replies
   • 22,499 views
   • 
   • pronstar
   • December 10

2. 6.0 oil change interval

   • 1
   • 2

   By 07Serria, October 7
   • 20 replies
   • 870 views
   • 
   • SierraHD17
   • December 9

3. DEF heater failure and engine light

   • 1
   • 2

   By Jnich17, November 10, 2017   

   • 2015 duramax
   • 19 replies
   • 4,100 views
   • 
   • Mikey52
   • December 3

4. 6.0 Oil

   • 1
   • 2
   • 3

   By WANNAFARM2, October 25
   • 30 replies
   • 786 views
   • 
   • diyer2
   • December 2

5. Reverse lights in towing mirror

   By Lon Bossom, November 19, 2017
   • 13 replies
   • 6,409 views
   • 
   • Biggerdogg01
   • December 2

6. 2015 brake job

   By ryanhardy, October 7
   • 6 replies
   • 395 views
   • 
   • rkj__
   • November 26

7. Opinions on towing?

   • 1
   • 2
   • 3

   By 2017DenaliHDChris, June 6
   • 35 replies
   • 2,654 views
   • 
   • Waaazooo
   • November 23

8. Diesel Regeneration

   • 1
   • 2
   • 3

   By Whip, July 12, 2015
   • 35 replies
   • 11,255 views
   • 
   • Cowpie
   • October 27

9. Code P21DD (Reductant Tank Heater)

   By TinkeringFox, October 15   

   • 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
   • 3,157 views
   • 
   • avalonandl
   • October 25

10. 2018 L5P sudden loss of power and shut off

    By 480Ruger, May 22   

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

      Tagged with:

      • l5p
      • loss of power
      • 2018
    • 7 replies
    • 1,880 views
    • 
    • gearheadesw
    • October 13

11. Short tube and long tube

    By Texas45, October 12   

    • headers
    • 2015
    • (and 4 more)

      Tagged with:

      • headers
      • 2015
      • 2500
      • 6.0
      • shorttube
      • long tube
    • 4 replies
    • 273 views
    • 
    • Slizzo
    • October 12

12. Short tube and long tube

    By Texas45, October 12   

    • headers
    • 2015
    • (and 4 more)

      Tagged with:

      • headers
      • 2015
      • 2500
      • 6.0
      • shorttube
      • long tube
    • 0 replies
    • 144 views
    • 
    • Texas45
    • October 12

13. Trailer disconnected connected on dash

    By cmysstailights, July 18
    • 14 replies
    • 644 views
    • 
    • cmysstailights
    • October 4

14. Drive train vibration

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

15. Drive Shaft Vibration 68-78 mph

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

16. Fuel

    • 1
    • 2

    By Waaazooo, May 26
    • 19 replies
    • 1,325 views
    • 
    • redwngr
    • September 30

17. AC Delco filters suck

    • 1
    • 2
    • 3
    • 4

    By gearheadesw, June 18, 2017
    • 50 replies
    • 5,710 views
    • 
    • gearheadesw
    • September 30

18. 2016 Silverado 2500 6.0 with Corsa

    By SOTO3389, April 13
    • 8 replies
    • 1,771 views
    • 
    • Black02Silverado
    • September 30

19. 2015 6.0 Drivetrain Clunking?

    By WiscoZ71, August 3
    • 8 replies
    • 555 views
    • 
    • gearheadesw
    • September 20

20. cp4 injector pump failed

    By HOLMAN391, September 10   

    • def
    • cp4 failure
    • (and 2 more)

      Tagged with:

      • def
      • cp4 failure
      • gm buyback
      • lml
    • 2 replies
    • 339 views
    • 
    • silveradosid
    • September 11

21. Fuel Mileage L5P

    • 1
    • 2

    By Peterd, July 23, 2017
    • 20 replies
    • 11,440 views
    • 
    • Colossus
    • September 10

22. HP tuners and the L5P

    By SierraHD17, September 8
    • 0 replies
    • 1,615 views
    • 
    • SierraHD17
    • September 8

23. 6.0 performance / fuel economy questions

    • 1
    • 2
    • 3
    • 4

    By Camstyn, April 10
    • 47 replies
    • 3,275 views
    • 
    • free88
    • September 7

24. Ltz supposed to have LED lights

    By junction44, July 31   

    • lights
    • ltz
    • (and 1 more)

      Tagged with:

      • lights
      • ltz
      • midnight
    • 4 replies
    • 520 views
    • 
    • CRApex
    • August 25

25. 2018 duramax mirror temperature

    By Jeff Mcelhany, August 3
    • 6 replies
    • 459 views
    • 
    • Jeff Mcelhany
    • August 16