Engines & Powertrain (Duramax & Vortec)

227 topics in this forum

1. DEF Heater Failure Repaired: Still Have "65MPH" Countdown

   By jasonvp, March 12, 2019
   • 14 replies
   • 30k views
   • 
   • jasonvp
   • March 15, 2019

2. Trailer disconnected connected on dash 1 2

   By cmysstailights, July 18, 2018
   • 15 replies
   • 27.3k views
   • 
   • hellswrath7
   • August 9, 2024

3. High Idle Switch

   By TX14Z71, April 7, 2014
   • 4 replies
   • 25.4k views
   • 
   • redwngr
   • April 11, 2014

4. 2016 Tuning advice! Kory Willis or Idaho Rob? Or...? 1 2 3

   By 480Ruger, May 7, 2016
   • 34 replies
   • 25.4k views
   • 
   • Cowpie
   • July 3, 2017

5. '17 2500hd 6.0L Long Tube Headers? 1 2

   By Biggerdogg01, January 5, 2019
   • 23 replies
   • 25.3k views
   • 
   • pokismoki
   • January 28, 2022

6. 2018 duramax mirror temperature

   By Jeff Mcelhany, August 3, 2018
   • 6 replies
   • 24.7k views
   • 
   • Jeff Mcelhany
   • August 16, 2018

7. Worth buying high mileage trucks?

   By Katkinson1112, May 1, 2022
   • 13 replies
   • 23.9k views
   • 
   • CybeRube2
   • January 22, 2025

8. 6.0 Oil 1 2 3

   By WANNAFARM2, October 25, 2018
   • 34 replies
   • 23.5k views
   • 
   • Cowpie
   • January 8, 2019

9. Make tow mirror parking lights blink with turn signal 1 2

   By Tx_operator87, March 22, 2019
   • 24 replies
   • 22.1k views
   • 
   • pgamboa
   • January 27, 2020

10. 6.0 Surging while Cruising at Low RPM

    By bigsby, May 9, 2016
    • 11 replies
    • 22.1k views
    • 
    • Cowpie
    • August 24, 2019

11. Low Oil in Diesel Engine 6.6L 1 2

    By AK_ Maverick-X3, December 1, 2020
    • 18 replies
    • 22k views
    • 
    • AK_ Maverick-X3
    • December 10, 2020

12. Diesel Particulate Filter Regeneration Frequency

    By tripleb, February 16, 2020
    • 9 replies
    • 21.8k views
    • 
    • Colossus
    • August 18, 2020

13. High RPM's while towing. 1 2

    By nicko1234, October 16, 2016
    • 16 replies
    • 21k views
    • 
    • azsheepdog
    • February 1, 2017

14. 6.0 pulling timing at 3000 RPM 1 2

    By Abarth500., June 3, 2018   

    • 6.0
    • vortec
    • (and 4 more)

      Tagged with:

      • 6.0
      • vortec
      • knock retard
      • pulling timing
      • 3000
      • rpm
    • 18 replies
    • 20.7k views
    • 
    • Zackdarden5
    • September 26, 2022

15. 2015 6.0 Burned Spark Plugs 1 2

    By WiscoZ71, April 5, 2020
    • 15 replies
    • 20.2k views
    • 
    • Duckman Dean
    • June 21, 2021

16. Turns over but won't start without ether

    By kbm0084, November 6, 2017   

    • issues
    • wont start
    • (and 3 more)

      Tagged with:

      • issues
      • wont start
      • ether
      • 3500
      • gmc
    • 9 replies
    • 19.8k views
    • 
    • GMCustomerService
    • April 13, 2023

17. 6.0 Supercharger (2015+)

    By 2015VORTECZ71, January 15, 2017
    • 13 replies
    • 19.7k views
    • 
    • Lakeside518
    • August 6, 2017

18. 2016 GMC Sierra 2500HD Service Trailer Brake System/Check Trailer Connection

    By GMCNuneZ71, July 22, 2019
    • 8 replies
    • 19.5k views
    • 
    • zed2
    • October 25, 2020

19. Remote Start - Glow Plug

    By 77vetter, May 21, 2016
    • 6 replies
    • 19.3k views
    • 
    • austingta
    • September 6, 2016

20. 2017 Duramax L5P base idle 1 2

    By jaws3, April 23, 2020
    • 16 replies
    • 19.2k views
    • 
    • Bbutch7179
    • June 12, 2021

21. First oil change for Duramax

    By Butcher2, November 13, 2019
    • 11 replies
    • 19.1k views
    • 
    • Black02Silverado
    • November 21, 2019

22. AC Delco filters suck 1 2 3 4

    By gearheadesw, June 18, 2017
    • 50 replies
    • 18.9k views
    • 
    • gearheadesw
    • September 30, 2018

23. 2019 2500 6.6 Duramax High Idle

    By Brad Carruthers, September 25, 2020
    • 4 replies
    • 18.8k views
    • 
    • redwngr
    • September 28, 2020

24. 2016 Duramax - New Truck "TOWING" Break-In???

    By trpshoot, June 26, 2016
    • 10 replies
    • 18.3k views
    • 
    • trpshoot
    • July 20, 2016

25. 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