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

1,040 topics in this forum

1. Oil change 1 2

   By Avery Dameron, November 10, 2021
   • 23 replies
   • 3.2k views
   • 
   • KARNUT
   • November 28, 2021

3. Straight pipes = tickets 1 2

   By Avery Dameron, November 13, 2021
   • 19 replies
   • 2.3k views
   • 
   • Transient
   • November 28, 2021

4. Mufflers today 😭 1 2

   By Avery Dameron, November 19, 2021   

   • dynomax
   • x pipe
   • (and 3 more)

     Tagged with:

     • dynomax
     • x pipe
     • straightpipe
     • 5.3
     • police
   • 19 replies
   • 2.9k views
   • 
   • Transient
   • November 28, 2021

5. H pipe inquiry

   By Avery Dameron, November 17, 2021
   • 7 replies
   • 956 views
   • 
   • M1ck3y
   • November 27, 2021

6. Steering wheel alignment

   By Snakes709, November 10, 2021
   • 7 replies
   • 6.8k views
   • 
   • rbdjr
   • November 26, 2021

7. 5.3 vs 6.2 drag race 1 2 3 4 6

   By 19AT4, May 17, 2020
   • 78 replies
   • 27.5k views
   • 
   • M1ck3y
   • November 24, 2021

8. My at4 does not have black side mirrors?

   By KTX556, November 12, 2021
   • 2 replies
   • 942 views
   • 
   • MG386
   • November 23, 2021

9. PF63E vs PF63 ?

   By milkmaster, November 14, 2021
   • 5 replies
   • 7.6k views
   • 
   • MG386
   • November 23, 2021

10. 2021 GMC Sierra V8 Lifter Damage 1 2 3

    By Greystone21, May 11, 2021
    • 34 replies
    • 22.8k views
    • 
    • Javier Rubio
    • November 23, 2021

11. at4 with 6.2 rough idle

    By cbprov, September 22, 2019
    • 10 replies
    • 18.3k views
    • 
    • Kilgore Trout
    • November 21, 2021

12. Performance Upgrade Package 1 2 3 4 9

    By brothernov, March 18, 2019
    • 132 replies
    • 84.2k views
    • 
    • putz173
    • November 17, 2021

13. 3.0 Duramax AT4 - Great so far 1 2

    By MPX1, May 22, 2021
    • 18 replies
    • 9.1k views
    • 
    • MPX1
    • November 17, 2021

14. 2.7l Engine Mods, Please help. 1 2 3 4

    By teej750, February 20, 2020
    • 46 replies
    • 59.1k views
    • 
    • deheavychevy
    • November 13, 2021

15. 2021 Sierra Denali 6.2L Engine or Exhaust Chirp Noise 1 2

    By Pbrad074, July 4, 2021
    • 15 replies
    • 10.1k views
    • 
    • Transient
    • November 12, 2021

16. GM offer $100.00 to check 3.0 Duramax

    By Ioniq MPG, August 11, 2021
    • 7 replies
    • 2.2k views
    • 
    • Ioniq MPG
    • November 12, 2021

17. Rattling nose

    By De9mize, November 8, 2021   

    • noise
    • 0 replies
    • 3.2k views
    • 
    • De9mize
    • November 8, 2021

18. “Flipping pill” 10 speed and 170 t stat

    By lpg, November 2, 2021
    • 11 replies
    • 2.1k views
    • 
    • lpg
    • November 4, 2021

19. 2021 LM2 provent install

    By Pawg, August 22, 2021
    • 1 reply
    • 1.1k views
    • 
    • Skip H
    • November 1, 2021

20. 3.0 Duramax S&B air intake discussion 1 2 3

    By Pswa320, February 26, 2021
    • 41 replies
    • 31.9k views
    • 
    • mjonesjr84
    • October 27, 2021

21. What is considered normal DEF usage for a 3.0L?

    By swervin36, October 22, 2021
    • 4 replies
    • 1.3k views
    • 
    • Sqrls
    • October 27, 2021

22. Getting exhaust done

    By Avery Dameron, October 13, 2021
    • 9 replies
    • 1.6k views
    • 
    • putz173
    • October 26, 2021

23. Headers

    By Ernest Crist, October 24, 2021
    • 10 replies
    • 1.6k views
    • 
    • redwngr
    • October 25, 2021

24. 2019 Chevy Silverado 1500 (new body)

    By USMCCHEVY86, October 25, 2021
    • 3 replies
    • 726 views
    • 
    • USMCCHEVY86
    • October 25, 2021

25. Borla Touring or S Type on the fence

    By BamX31, September 19, 2021
    • 12 replies
    • 12.9k views
    • 
    • vfm2010
    • October 22, 2021

26. Beware: GM cold air intake 1 2 3

    By econometrics, September 9, 2020
    • 34 replies
    • 16.2k views
    • 
    • Mudcon
    • October 19, 2021