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

1,040 topics in this forum

1. ATV Hauling with Multi-pro

   By brothernov, September 16, 2019
   • 3 replies
   • 8k views
   • 
   • newdude
   • September 16, 2019

3. Swapping out GM performance muffler

   By brianc636, July 8, 2019
   • 5 replies
   • 1.7k views
   • 
   • brianc636
   • September 5, 2019

4. Exhaust options for new owner

   By jordanl010, August 26, 2019
   • 10 replies
   • 1.5k views
   • 
   • War Eagle
   • September 1, 2019

5. Left over factory tips

   By brianc636, August 28, 2019
   • 7 replies
   • 972 views
   • 
   • brianc636
   • August 30, 2019

6. Just the tip(s)....

   By Rylo02, August 27, 2019
   • 13 replies
   • 1.5k views
   • 
   • Rylo02
   • August 28, 2019

7. Has Anyone Purchased the GM-Borla Exhaust Upgrade

   By BlackBeard1790, August 27, 2019
   • 0 replies
   • 712 views
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   • BlackBeard1790
   • August 27, 2019

8. 2019 Silverado 1500 5.3 V8 bluish/white smoke on initial start

   By Justin Odom, August 24, 2019
   • 8 replies
   • 8.5k views
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   • truck_newbie
   • August 24, 2019

9. What size/configuration muffler do I need to buy?

   By Philipgonzales3, August 12, 2019
   • 11 replies
   • 3.9k views
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   • Philipgonzales3
   • August 23, 2019

10. 12 speed Allison?

    By kilowhiskey, August 15, 2019
    • 4 replies
    • 1k views
    • 
    • kilowhiskey
    • August 15, 2019

11. 2019 Custom Trail Boss Tuning Options - 5.3 AFM Engine

    By ETMC, August 14, 2019
    • 12 replies
    • 9.9k views
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    • SILVER SLED
    • August 15, 2019

12. Gibson muffler

    By saber, August 3, 2019
    • 2 replies
    • 726 views
    • 
    • FiatDale
    • August 13, 2019

13. Weekend update

    By Cohocarl, August 9, 2019
    • 2 replies
    • 605 views
    • 
    • Cohocarl
    • August 12, 2019

14. V6 power upgrades

    By 2019 Sierra Me, July 27, 2019
    • 5 replies
    • 3k views
    • 
    • bshort
    • August 8, 2019

15. 2020 3500 hd Allison transmission

    By Pfc1, July 27, 2019
    • 4 replies
    • 1.7k views
    • 
    • Pfc1
    • August 6, 2019

16. Ideas for 5.3 power increase

    By Trail Boss 1, June 10, 2019
    • 8 replies
    • 18.5k views
    • 
    • DemonWorks
    • August 4, 2019

17. Auto stop

    By mr8ball, June 23, 2019
    • 2 replies
    • 1.6k views
    • 
    • jkrunningdeer
    • August 1, 2019

18. Squashed pipe after cat

    By code-man26, July 3, 2019
    • 3 replies
    • 1.1k views
    • 
    • jkrunningdeer
    • August 1, 2019

19. Throttle body spacer

    By Darcy, July 29, 2019
    • 6 replies
    • 4.3k views
    • 
    • diyer2
    • August 1, 2019

20. Video request for 2019 5.3 borla s type or corsa sport

    By fieldsend, June 19, 2019   

    • exhaust
    • 1 reply
    • 1.1k views
    • 
    • Suprmario
    • August 1, 2019

21. 2.75” exhaust tips

    By brianc636, July 27, 2019
    • 1 reply
    • 518 views
    • 
    • AJMBLAZER
    • July 31, 2019

22. Dynamic Fuel Management (DFM) versus AFM

    By gmcsierra71, July 12, 2019
    • 9 replies
    • 12.2k views
    • 
    • Rob41
    • July 29, 2019

23. 5.3L Borla ATAK

    By markyezy, July 16, 2019
    • 7 replies
    • 5.1k views
    • 
    • MacLaren
    • July 24, 2019

24. 2019 TrailBoss switches to 4wd on its own.

    By bigwig, July 17, 2019
    • 1 reply
    • 586 views
    • 
    • Sin City Trail Boss
    • July 21, 2019

25. AT4 Air intake on the hood

    By BLACK AT4, April 3, 2019
    • 8 replies
    • 7k views
    • 
    • 88junior
    • July 21, 2019

26. Cut Off Resonators on a 6.2?

    By eppieguy, July 12, 2019
    • 9 replies
    • 4.3k views
    • 
    • ShamrockShooter
    • July 21, 2019