Engines & Powertrain (Duramax & Vortec)

227 topics in this forum

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

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

2. Seat belt Shoulder restraint removal top pillar bolt

   By Mud168, January 19, 2020
   • 0 replies
   • 691 views
   • 
   • Mud168
   • January 19, 2020

3. CANADIAN SPEC 2015 2500HD LT 6L FLEXFUEL

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

4. 2019 GMC L5P Tuners

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

5. 2017 L5P runaway!!!!!engine gone.. scary..now what? 1 2

   By cowboy86, June 6, 2019
   • 19 replies
   • 17.9k views
   • 
   • 14Mach
   • December 5, 2019

6. U bolts rear axle

   By Jean-Marc L'Eplattenier, November 20, 2019   

   • axle
   • rear
   • (and 2 more)

     Tagged with:

     • axle
     • rear
     • u bolts
     • torque
   • 1 reply
   • 12.4k views
   • 
   • paauto
   • November 27, 2019

7. Leaking fuel

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

8. First oil change for Duramax

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

9. LML Engine Noise Under Acceleration ~2000rpms

   By tko500, November 13, 2019
   • 0 replies
   • 4.4k views
   • 
   • tko500
   • November 13, 2019

10. Turbo spool noise

    By RACERX4772, September 17, 2019
    • 3 replies
    • 6.2k views
    • 
    • edktm
    • November 7, 2019

11. Drive Shaft Vibration 68-78 mph

    By whitlecj, July 27, 2018
    • 6 replies
    • 7.6k views
    • 
    • edktm
    • November 7, 2019

12. 2015 Silverado 2500hd fuel consumption

    By Udacha, September 18, 2019
    • 9 replies
    • 3k views
    • 
    • redwngr
    • November 6, 2019

13. Which Engine Oil (conventional or synthetic) 1 2 3 4

    By WireBender, June 18, 2017
    • 51 replies
    • 100.6k views
    • 
    • edktm
    • November 5, 2019

14. 2018 Chevrolet 2500 HD rear tire spin 1 2

    By Hanover123, May 27, 2019
    • 22 replies
    • 6.4k views
    • 
    • stadt11
    • November 1, 2019

15. Torque converter

    By FLORIDAMK, August 2, 2019
    • 5 replies
    • 2.9k views
    • 
    • stadt11
    • November 1, 2019

16. Diesel 1 2

    By cmysstailights, October 11, 2019
    • 20 replies
    • 2.8k views
    • 
    • Cowpie
    • October 17, 2019

17. Particulate filter not working

    By Jim Dunham, September 12, 2019
    • 8 replies
    • 3.1k views
    • 
    • greatmizzou
    • October 10, 2019

18. 2015 Duramax: Cold Oil Pressure Bounces Off "0"

    By jasonvp, January 31, 2019
    • 8 replies
    • 11.4k views
    • 
    • jasonvp
    • September 18, 2019

19. Unusual DEF Behavior

    By TMac99, August 28, 2017   

    • l5p
    • def
    • 4 replies
    • 10.2k views
    • 
    • Kyres3
    • September 11, 2019

20. From 1/2 ton to 1 ton Duramax

    By Ron505, August 23, 2019
    • 7 replies
    • 1.8k views
    • 
    • Ron505
    • September 8, 2019

21. 2015 brake job

    By ryanhardy, October 7, 2018
    • 10 replies
    • 11.1k views
    • 
    • q.poole
    • September 5, 2019

22. Emissions problem and the dealership

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

23. New to me 2015 Denali hd diesel

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

24. Fuel Mileage L5P 1 2

    By Peterd, July 23, 2017
    • 22 replies
    • 33.1k views
    • 
    • doosierra
    • August 29, 2019

25. Ltz supposed to have LED lights

    By junction44, July 31, 2018   

    • lights
    • ltz
    • (and 1 more)

      Tagged with:

      • lights
      • ltz
      • midnight
    • 11 replies
    • 5.9k views
    • 
    • doosierra
    • August 29, 2019