Engines & Powertrain (Duramax & Vortec)

227 topics in this forum

1. Replaced air filter

   By franklin, May 23, 2016
   • 0 replies
   • 1.7k views
   • 
   • franklin
   • May 23, 2016

2. 2018 6.6 duramax

   By Miles Brooks, April 25, 2020
   • 3 replies
   • 1.7k views
   • 
   • curver900
   • April 27, 2020

3. considerind upgrade from 2005Sierra Denali to 2015 2500 Sierra Denali Duramax

   By atlantaman, February 5, 2018   

   • questions on cars
   • 0 replies
   • 1.6k views
   • 
   • atlantaman
   • February 5, 2018

4. 2019 GMC L5P Tuners

   By rvkeller, December 29, 2019
   • 3 replies
   • 1.6k views
   • 
   • Diver6
   • December 29, 2019

5. Brake hardware differences 16-17/18

   By Waaazooo, May 5, 2018
   • 5 replies
   • 1.6k views
   • 
   • newdude
   • May 7, 2018

6. Aftermarket headlights and cab lights.

   By HuntFX, July 29, 2017
   • 1 reply
   • 1.5k views
   • 
   • SMiller
   • August 7, 2017

7. 2018 Silverado 3500 theft recovery

   By Jose linares, February 7, 2020   

   • theft
   • instrument
   • (and 2 more)

     Tagged with:

     • theft
     • instrument
     • cluster
     • odometer
   • 1 reply
   • 1.5k views
   • 
   • BigBadSierra
   • February 7, 2020

8. No power to driver side lowbeam

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

9. 2017 Duramax Recommends Using Only GM DEF to Avoid Problems

   By jimstringer, August 11, 2017   

   • def quality issues
   • 0 replies
   • 1.4k views
   • 
   • jimstringer
   • August 11, 2017

10. Pollack valve install

    By 42skidoox, August 23, 2017
    • 0 replies
    • 1.4k views
    • 
    • 42skidoox
    • August 23, 2017

11. No power all the sudden .parked went inside came out and nothing no dash no crank nothing dead completely 9

    By Delaney Kerr, January 16, 2024
    • 0 replies
    • 1.3k views
    • 
    • Delaney Kerr
    • January 16, 2024

12. New to me 2015 Denali hd diesel

    By cperk, January 3, 2019
    • 5 replies
    • 1.3k views
    • 
    • doosierra
    • August 29, 2019

13. Recon Headlights

    By HuntFX, July 29, 2017
    • 1 reply
    • 1.3k views
    • 
    • SMiller
    • August 7, 2017

14. CANADIAN SPEC 2015 2500HD LT 6L FLEXFUEL

    By David Ardin, January 13, 2020
    • 3 replies
    • 1.3k views
    • 
    • redwngr
    • January 14, 2020

15. 2019 2500HD trans issue ( wheels spinning while trying to stop!)

    By 2019 Red, September 24, 2024
    • 0 replies
    • 1.3k views
    • 
    • 2019 Red
    • September 24, 2024

16. Wire gage used in stock 7 way trailer connector.

    By PED, May 26, 2015
    • 0 replies
    • 1.3k views
    • 
    • PED
    • May 26, 2015

17. DEF Tank

    By RP53, February 15, 2020
    • 1 reply
    • 1.1k views
    • 
    • redwngr
    • February 16, 2020

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
    • 1.1k views
    • 
    • Texas45
    • October 12, 2018

19. two chimes vs one chime when I turn on ignition

    By Reggie Belanger, January 3, 2024   

    • 2019 Sierra 2500HD Duramax
    • 0 replies
    • 1k views
    • 
    • Reggie Belanger
    • January 3, 2024

20. What size lift?

    By Blake Murray, February 19, 2020
    • 0 replies
    • 906 views
    • 
    • Blake Murray
    • February 19, 2020

21. Leaking fuel

    By Joshua Jeremiah Day, November 25, 2019
    • 5 replies
    • 855 views
    • 
    • redwngr
    • November 26, 2019

22. Regen

    By DBeau, March 9, 2019
    • 0 replies
    • 800 views
    • 
    • DBeau
    • March 9, 2019

23. Emissions problem and the dealership

    By Petrolhead, September 1, 2019
    • 0 replies
    • 798 views
    • 
    • Petrolhead
    • September 1, 2019

24. door lock problem

    By glenn hofer, July 19, 2020
    • 0 replies
    • 778 views
    • 
    • glenn hofer
    • July 19, 2020

25. No sound from speakers

    By Jinbama, January 29, 2019
    • 0 replies
    • 695 views
    • 
    • Jinbama
    • January 29, 2019