Engines & Drivetrain (V8, Duramax, TurboMax)

1,140 topics in this forum

1. Magnetic drain plug

   By MikeDP, April 21, 2021
   • 2 replies
   • 1.1k views
   • 
   • MikeDP
   • April 26, 2021

2. ECM

   By bigdog2005, April 25, 2021
   • 0 replies
   • 684 views
   • 
   • bigdog2005
   • April 25, 2021

3. Factory Dual Exhaust Question

   By Diamond817, April 18, 2021
   • 2 replies
   • 1.6k views
   • 
   • Diamond817
   • April 21, 2021

4. Rear wheel locked into place

   By Denali2019, April 21, 2021   

   • wheel lock
   • 3 replies
   • 3.7k views
   • 
   • It's Tim
   • April 21, 2021

5. 2021 Trail Boss left me stranded. Owned for 16 hours.

   By Whiskeyranch, December 24, 2020
   • 12 replies
   • 5.7k views
   • 
   • brwk
   • April 20, 2021

6. Flapper valve warranty

   By KShi, April 17, 2021
   • 2 replies
   • 1.3k views
   • 
   • SILVER SLED
   • April 19, 2021

7. Muffler/flapper delete single exhaust

   By KShi, April 14, 2021
   • 0 replies
   • 1k views
   • 
   • KShi
   • April 14, 2021

8. Blue Smoke

   By Crazyleggs, March 27, 2021
   • 11 replies
   • 9.7k views
   • 
   • Adamace1
   • April 13, 2021

9. Normal Engine/trans temps 1 2

   By mandrewbot3k, April 11, 2021
   • 15 replies
   • 3.6k views
   • 
   • redwngr
   • April 12, 2021

10. 3.0 Fuel Filter

    By mjonesjr84, April 11, 2021
    • 7 replies
    • 17.8k views
    • 
    • mjonesjr84
    • April 12, 2021

11. 2019 Silverado jerk when coming to a stop

    By jtranger, April 8, 2021
    • 3 replies
    • 2.1k views
    • 
    • luke1333
    • April 12, 2021

12. Vibration 3500 Dually

    By Ralph Topper, March 10, 2021
    • 1 reply
    • 2.1k views
    • 
    • Josh42089
    • April 6, 2021

13. 2020/2021 8 speed problems

    By dgstarr63, April 4, 2021
    • 5 replies
    • 24.2k views
    • 
    • redwngr
    • April 5, 2021

14. Most mild exhaust

    By RPaul, March 29, 2021
    • 10 replies
    • 5.1k views
    • 
    • Jacob Capra
    • April 3, 2021

15. Towing at 80 mph. 1 2

    By AudiOn19s, October 26, 2020
    • 16 replies
    • 8.3k views
    • 
    • KARNUT
    • April 3, 2021

16. .

    By Firehawk99, March 29, 2021
    • 0 replies
    • 537 views
    • 
    • Firehawk99
    • March 29, 2021

17. Flowmaster FlowFX 1 2 3

    By mrcribbs, April 7, 2019
    • 30 replies
    • 16.2k views
    • 
    • Sublym808_RST
    • March 29, 2021

18. S&B Cold Air Intake 1 2 3 4

    By BluegrassMotorsport, January 8, 2021
    • 53 replies
    • 23.4k views
    • 
    • Kickerz71
    • March 29, 2021

19. 2021 GMC Sierra 1500 Denali Emissions Standards and Color

    By Ty_1_On, March 28, 2021
    • 0 replies
    • 734 views
    • 
    • Ty_1_On
    • March 28, 2021

20. TSB document for the 6.2L valve spring problem

    By kodiakdenali, January 15, 2021
    • 7 replies
    • 15.1k views
    • 
    • IOMTT
    • March 28, 2021

21. Diff fluid?

    By Moledigger2019, March 22, 2021
    • 4 replies
    • 1.4k views
    • 
    • IOMTT
    • March 28, 2021

22. Size / offset of flowmaster 44

    By Dannoo, March 17, 2021
    • 4 replies
    • 3.3k views
    • 
    • Dannoo
    • March 28, 2021

23. Range Disabler no worky on my 2020 8 speed

    By Travis Crawford, March 25, 2021
    • 1 reply
    • 998 views
    • 
    • Jac365
    • March 26, 2021

24. Thrush Mufflers

    By rdmsyr, February 27, 2021
    • 5 replies
    • 2.9k views
    • 
    • yzinger
    • March 26, 2021

25. 21 6.2 S$B CAI install; Check engine light

    By 21AT4NJ, March 24, 2021
    • 4 replies
    • 1.7k views
    • 
    • RStrain56
    • March 25, 2021