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

1,039 topics in this forum

1. Stock Exhaust

   By GMC19Sierra, March 9, 2020   

   • gmc
   • exhaust
   • (and 1 more)

     Tagged with:

     • gmc
     • exhaust
     • sierra
   • 5 replies
   • 1.6k views
   • 
   • Gangly
   • April 21, 2020

3. L84 engine & E85

   By TRKLGND, April 20, 2020
   • 2 replies
   • 7.3k views
   • 
   • Black02Silverado
   • April 20, 2020

4. Tired of the research 1 2

   By Chevynoob, April 17, 2020
   • 17 replies
   • 2.2k views
   • 
   • Chevynoob
   • April 18, 2020

5. 35s 6.2L 10spd 3:23s 1 2

   By Anakalypto, April 11, 2020
   • 25 replies
   • 9.6k views
   • 
   • Anakalypto
   • April 18, 2020

6. Trail Boss 6.2 exhaust recommendations

   By William Lowe, April 9, 2020
   • 3 replies
   • 10.3k views
   • 
   • AKinlaw
   • April 14, 2020

7. 3.0 Duramax Oil Availability

   By Time2gofishing1980, April 12, 2020
   • 3 replies
   • 1.1k views
   • 
   • Time2gofishing1980
   • April 14, 2020

8. Kooks catback anyone?

   By Fireman02, April 12, 2020
   • 1 reply
   • 512 views
   • 
   • lt1z
   • April 12, 2020

9. Muffler delete vs swap vs cat back 1 2 3

   By highbl00d, March 7, 2020
   • 32 replies
   • 12.4k views
   • 
   • RadoPhan
   • April 12, 2020

10. Do I need to re-gear ?

    By Cbaur, March 18, 2020
    • 2 replies
    • 682 views
    • 
    • Anakalypto
    • April 11, 2020

11. Fluctuation in oil pressue

    By maine shadow, April 8, 2020
    • 8 replies
    • 12.4k views
    • 
    • maine shadow
    • April 10, 2020

12. Leveling at4s and trail boss

    By Joe McCue, April 3, 2020
    • 3 replies
    • 958 views
    • 
    • JustinF
    • April 6, 2020

13. flowmaster active valve exhaust

    By Snail77, April 5, 2020
    • 1 reply
    • 1.5k views
    • 
    • bshort
    • April 6, 2020

14. Rough Country Cat-Back Exhaust

    By west1nm, February 19, 2020
    • 12 replies
    • 22.2k views
    • 
    • BLK- 2020 TB
    • April 2, 2020

15. Dfm work around 1 2

    By Moosebeavers, October 27, 2019
    • 23 replies
    • 21k views
    • 
    • Anakalypto
    • April 2, 2020

16. 5.3 GM performance package question 1 2

    By mistaare, January 26, 2020
    • 21 replies
    • 4.7k views
    • 
    • xsquid
    • March 30, 2020

17. Best performing exhaust with quite sound 1 2 3 4

    By WyoAT4, December 28, 2019
    • 55 replies
    • 10k views
    • 
    • bshort
    • March 28, 2020

18. Whipple 3.0 1 2

    By 570590, March 14, 2020
    • 22 replies
    • 6.7k views
    • 
    • lt1z
    • March 24, 2020

19. Wiring and transmission troubles

    By 2019 Sierra lemon, March 16, 2020
    • 2 replies
    • 500 views
    • 
    • BlancoSilverado
    • March 23, 2020

20. 3.0L Diesel Emissions

    By chris84, March 17, 2020
    • 0 replies
    • 532 views
    • 
    • chris84
    • March 17, 2020

21. Lowered now feeling those good vibrations

    By spdfrk31, March 9, 2020
    • 1 reply
    • 724 views
    • 
    • Bobv07662
    • March 16, 2020

22. AFE intake on my T1

    By 19silverrado, March 5, 2020
    • 9 replies
    • 1k views
    • 
    • 19silverrado
    • March 14, 2020

23. Borla Cat-Back Touring vs S-Type 1 2

    By west1nm, March 9, 2020
    • 16 replies
    • 28.4k views
    • 
    • west1nm
    • March 14, 2020

24. 19-20 Procharger kit for 5.3 and 6.2

    By Peter Bittner, March 13, 2020   

    • Supercharger
    • 6.2
    • (and 1 more)

      Tagged with:

      • Supercharger
      • 6.2
      • Procharger
    • 9 replies
    • 3.5k views
    • 
    • CP312
    • March 13, 2020

25. 2020 3.0 Duramax p26C0

    By Time2gofishing1980, March 5, 2020
    • 3 replies
    • 5.3k views
    • 
    • redvettez06
    • March 12, 2020

26. 2019-2020 Dual Exhaust

    By Whiz, March 5, 2020   

    • dual exhaust
    • 2 replies
    • 1.5k views
    • 
    • Whiz
    • March 11, 2020