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

1,039 topics in this forum

1. Muffler delete 2019 silverado 1 2 3

   By nhman781, December 30, 2019
   • 40 replies
   • 19.5k views
   • 
   • bdsilverado
   • February 12, 2020

3. Stock muffler swapped for borla pro xs

   By S9779, February 10, 2020
   • 3 replies
   • 3.4k views
   • 
   • S9779
   • February 11, 2020

4. GM CAI Install @ Dealership 1 2 3

   By JAshworth03, December 19, 2019
   • 34 replies
   • 4.1k views
   • 
   • 2019ArkansasSierra
   • February 8, 2020

5. Magnaflow D-Fit

   By xsquid, February 5, 2020
   • 1 reply
   • 1.9k views
   • 
   • scotman623
   • February 7, 2020

6. 2020 3.0 duramax in the shop with 140 miles and a bad dpf already

   By Moab4x432, February 1, 2020   

   • duramax
   • 5 replies
   • 3.5k views
   • 
   • BIGDOGx
   • February 4, 2020

7. 6.2l new muffler or delete

   By cbprov, September 4, 2019
   • 13 replies
   • 11.4k views
   • 
   • MAK2013
   • February 4, 2020

8. 2020 3500 Trany leak

   By mollerism, February 2, 2020
   • 3 replies
   • 483 views
   • 
   • EXSlider400
   • February 4, 2020

9. 2020 3.0 duramax in the shop with 140 miles and a bad dpf already

   By Moab4x432, February 1, 2020   

   • duramax
   • 0 replies
   • 870 views
   • 
   • Moab4x432
   • February 1, 2020

10. Single Speed Transfer Case

    By SummitWhiteT1, January 15, 2020
    • 14 replies
    • 23.5k views
    • 
    • SummitWhiteT1
    • January 28, 2020

11. No more tailpipe vents

    By PATrailBoss19, January 12, 2020
    • 14 replies
    • 8.3k views
    • 
    • Texasdeere
    • January 28, 2020

12. 2019 T1 8 speed Shifting 1 2 3 4 6

    By bearded_warrior, March 26, 2019   

    • transmission
    • shifting
    • 85 replies
    • 21.9k views
    • 
    • econometrics
    • January 25, 2020

13. 3.0 L Diesel. Anyone Else Notice This??

    By ILSilverado, January 22, 2020
    • 8 replies
    • 5k views
    • 
    • Colossus
    • January 22, 2020

14. Anyone replaced stock rectangular tips with round quads?

    By JEB87, January 20, 2020
    • 0 replies
    • 638 views
    • 
    • JEB87
    • January 20, 2020

15. Intake mod for 2019 TB 5.3L?

    By SquireSCA, December 25, 2019
    • 11 replies
    • 1.7k views
    • 
    • RaisedByWolves
    • January 7, 2020

16. Muffler recommendations 1 2

    By TKtrailboss88, December 30, 2019
    • 25 replies
    • 3.5k views
    • 
    • SquireSCA
    • January 5, 2020

17. 2019 8 Speed Transmission Rumble/Vibration On Deceleration 1 2

    By hotrodz37, November 27, 2019
    • 15 replies
    • 3.9k views
    • 
    • hotrodz37
    • December 31, 2019

18. Red OEM Exhaust Tips - AT4 Trail Boss

    By EXSlider400, December 19, 2019   

    • Exhaust tip colors
    • 13 replies
    • 7.4k views
    • 
    • EXSlider400
    • December 30, 2019

19. AFE Mods

    By Justin Wilt, August 1, 2019
    • 4 replies
    • 1.3k views
    • 
    • SquireSCA
    • December 29, 2019

20. Performance Package - '19 Denali

    By paradox27, December 28, 2019
    • 1 reply
    • 682 views
    • 
    • CamGTP
    • December 28, 2019

21. Anyone take these to the 1/4 mile yet? 1 2 3 4

    By 19AT4, September 22, 2019
    • 51 replies
    • 7k views
    • 
    • EXSlider400
    • December 27, 2019

22. How many miles before your truck “Woke up”? 1 2

    By RaisedByWolves, November 5, 2019
    • 17 replies
    • 3.8k views
    • 
    • Grumpy Bear
    • December 26, 2019

23. Exhaust size for muffler swap - Help Needed

    By PATrailBoss19, December 26, 2019
    • 0 replies
    • 852 views
    • 
    • PATrailBoss19
    • December 26, 2019

24. 5.3 MBRP Exhaust Review & Install FYI - UPDATE 1 2

    By SamDSJR, December 8, 2019
    • 23 replies
    • 16k views
    • 
    • Londart2020
    • December 25, 2019

25. New Gibson Exhaust

    By Londart2020, December 24, 2019
    • 4 replies
    • 3k views
    • 
    • Londart2020
    • December 25, 2019

26. Horrible gas milage 1 2

    By Asd A, December 4, 2019
    • 24 replies
    • 2.8k views
    • 
    • Snakes709
    • December 21, 2019