2019-2025 Silverado & Sierra Engine & Transmission (L3B/L82/L84/L87/LM2/LZ0)

1,040 topics in this forum

1. Cold Air Intake 1 2 3 4 5

   By LGJ1984, December 31, 2019
   • 61 replies
   • 15k views
   • 
   • HistoryTeacher2020
   • January 4, 2021

3. Baseline dyno numbers for a 6.2L? 1 2

   By kodiakdenali, January 1, 2021
   • 18 replies
   • 22k views
   • 
   • Rob Mugs
   • January 3, 2021

4. Exhaust help!!

   By Rawshaw, December 30, 2020
   • 1 reply
   • 547 views
   • 
   • Rob Mugs
   • December 30, 2020

5. 3 l complete shutdown

   By 3.0, December 23, 2020
   • 7 replies
   • 1.1k views
   • 
   • 3.0
   • December 29, 2020

6. 2019/2020 Exhaust Tips

   By HDGlide12, October 28, 2020
   • 8 replies
   • 2k views
   • 
   • BluegrassMotorsport
   • December 29, 2020

7. AT4 3.0 Duramax Owners 1 2

   By Z71RAD88, October 18, 2020
   • 18 replies
   • 5.5k views
   • 
   • OliverDennis52
   • December 29, 2020

8. Which AT Tires & how are they holding up

   By 3.0, September 26, 2020
   • 12 replies
   • 3.3k views
   • 
   • 3.0
   • December 29, 2020

9. 2.7L Mileage

   By Mike Borowski, September 8, 2020
   • 4 replies
   • 2.4k views
   • 
   • Justin Holland
   • December 28, 2020

10. Stop sale on 6.2l vehicles 1 2 3 4

    By rusty503, November 30, 2020
    • 48 replies
    • 10k views
    • 
    • KARNUT
    • December 26, 2020

11. 2020 Duramax 3.0L Oil 1 2

    By Jaketab, December 19, 2020
    • 15 replies
    • 13.5k views
    • 
    • Black02Silverado
    • December 21, 2020

12. Muffler Help 1 2

    By Weiser699, October 5, 2020
    • 24 replies
    • 9.6k views
    • 
    • 204Denali
    • December 20, 2020

13. Fuel fill size?

    By Hank B, December 16, 2020
    • 3 replies
    • 6k views
    • 
    • wurgs
    • December 17, 2020

14. How often does my 3L regen

    By ian cloutier, March 7, 2020
    • 14 replies
    • 42.4k views
    • 
    • DemonWorks
    • December 16, 2020

15. 5.3 Dynamic fuel management

    By Kdn85, December 16, 2020
    • 0 replies
    • 669 views
    • 
    • Kdn85
    • December 16, 2020

16. Best Borla ATAK for 2020 1500 AT4? (link)

    By Avenger1, December 14, 2020
    • 2 replies
    • 948 views
    • 
    • kodiakdenali
    • December 15, 2020

17. 5.3L Exhaust thread 1 2 3 4 6

    By Jremm15, May 17, 2019   

    • exhaust
    • 87 replies
    • 55.4k views
    • 
    • Dude1317
    • December 15, 2020

18. 3.0 Winter Additive

    By Crazypontiac03, December 6, 2020
    • 9 replies
    • 7.7k views
    • 
    • Jaketab
    • December 14, 2020

19. AFE power muffler replacement

    By hertge, December 9, 2020
    • 4 replies
    • 2.3k views
    • 
    • MeltedNorthern
    • December 14, 2020

20. 4.6l engine noise

    By 20silverado20, December 11, 2020
    • 5 replies
    • 745 views
    • 
    • ericarenee
    • December 11, 2020

21. GM Performance Exhaust Drone

    By bamorris2, December 7, 2020
    • 14 replies
    • 5.5k views
    • 
    • Unique_NY
    • December 10, 2020

22. 2019 5.3 8spd transmission issue

    By J_Cool87, December 8, 2020
    • 2 replies
    • 1.3k views
    • 
    • Brianibew
    • December 9, 2020

23. AFM delete

    By shane betzinger, September 22, 2020
    • 6 replies
    • 4.9k views
    • 
    • 2021TrailbossLTMA
    • December 5, 2020

24. Any recommendations for throttle body spacer for 6.2?

    By GMCvirgin, November 29, 2020
    • 4 replies
    • 1.8k views
    • 
    • davidr83
    • December 2, 2020

25. 10L80 10-speed Fluid Change & Check / Service Manual / Front Diff?

    By relevante, April 25, 2019
    • 7 replies
    • 42.9k views
    • 
    • Black02Silverado
    • December 1, 2020

26. Anyone add only borla mufflers ? 1 2

    By 204Denali, August 18, 2020
    • 28 replies
    • 10k views
    • 
    • 204Denali
    • November 30, 2020