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

1,040 topics in this forum

1. Pinging/detonation ??

   By Deadstockpomp, November 7, 2022
   • 2 replies
   • 1.2k views
   • 
   • s10dragracer888
   • September 25, 2023

3. Transmission temperature 10speed with 3.0 LZO Duramax 1 2 3

   By steve king, April 9, 2023
   • 35 replies
   • 22.8k views
   • 
   • MrMagloo
   • September 20, 2023

4. 3.0 Diesel exhaust tips

   By erogers10287, September 19, 2023
   • 2 replies
   • 1k views
   • 
   • Michael Stark
   • September 20, 2023

5. Vibrations in the seat at 38+ mph

   By Stiffler, August 31, 2023
   • 5 replies
   • 958 views
   • 
   • diyer2
   • September 18, 2023

6. GM Accessory Dual exit tip

   By Michael Stark, August 26, 2023
   • 8 replies
   • 1.5k views
   • 
   • Michael Stark
   • September 18, 2023

7. Trail Boss Axle Part #

   By PRK, September 6, 2023
   • 1 reply
   • 596 views
   • 
   • Bikerjon
   • September 17, 2023

8. 2023 Sierra single side exit to dual rear exit exhaust question

   By ddc1279, September 14, 2023
   • 1 reply
   • 1k views
   • 
   • GETGONE
   • September 15, 2023

9. 21 Elevation 5.3 slight tick at idle

   By Nicolas Passafiume, March 25, 2023
   • 4 replies
   • 2.3k views
   • 
   • Gangly
   • September 11, 2023

10. Duramax Fuel Filter Housing Stuck

    By Buddee, September 8, 2023
    • 4 replies
    • 5.3k views
    • 
    • Buddee
    • September 8, 2023

11. Most reliable platform/engine/transmission combination

    By Kableguy, August 25, 2023
    • 10 replies
    • 7.6k views
    • 
    • 4banger
    • September 6, 2023

12. 2019 Sierra AT4 5.3 10 speed "chuggle"

    By Dave78, September 1, 2023
    • 4 replies
    • 1.1k views
    • 
    • Dave78
    • September 2, 2023

13. Lifter Failure on New 2022 Sierra 1500 AT4 Limited 6.2 1 2 3 4

    By PacksAWallop, June 2, 2022   

    • 6.2
    • lifter
    • (and 1 more)

      Tagged with:

      • 6.2
      • lifter
      • at4
    • 45 replies
    • 27k views
    • 
    • MaverickZ71
    • August 28, 2023

14. L8T Swap - 2019 T1 Sierra w/ L84 + 8 speed

    By MacPH, August 25, 2023
    • 0 replies
    • 1.4k views
    • 
    • MacPH
    • August 25, 2023

15. 2021 GMC Sierra Denali 1500 Exhaust Sound Question

    By l337neteng, August 23, 2023
    • 4 replies
    • 1k views
    • 
    • l337neteng
    • August 24, 2023

16. 2023 3.0 Duramax siren noise from dash.

    By Greg Clark, August 8, 2023
    • 5 replies
    • 1.7k views
    • 
    • Thenorth0341
    • August 24, 2023

17. 6.2l oil consumption/engine failure

    By Roy Juneau, June 29, 2023
    • 5 replies
    • 4.4k views
    • 
    • Bikerjon
    • August 23, 2023

18. 2.7 Turbo Winter Driving

    By fsuboy75, June 15, 2023
    • 14 replies
    • 5.4k views
    • 
    • Texcl2
    • August 23, 2023

19. Replacement 10 speed trans

    By bowtie76, July 31, 2023
    • 4 replies
    • 1.8k views
    • 
    • SporkLover
    • August 17, 2023

20. Engine RPMs Bouncing 1 2

    By Monkey, August 23, 2020
    • 16 replies
    • 7.6k views
    • 
    • DHBWA
    • August 17, 2023

21. 10 spd trans in 2021-2023 3500 SRW

    By Jack Horn, August 10, 2023
    • 3 replies
    • 688 views
    • 
    • Jack Horn
    • August 11, 2023

22. 22.5 Refreshed L3B 2.7 Silverado Fuel Issue

    By B Batt, May 15, 2023
    • 4 replies
    • 2.3k views
    • 
    • 4banger
    • July 28, 2023

23. When Will We See Performance Parts for the 3.0 Duramax 1 2 3

    By afterburner82, March 18, 2020   

    • 3.0l duramax
    • exhaust
    • (and 1 more)

      Tagged with:

      • 3.0l duramax
      • exhaust
      • cai cold air intake duramax
    • 32 replies
    • 69.8k views
    • 
    • Lumpy53
    • July 25, 2023

24. Wooo HOOO got my Corsa Sport finally!

    By Naughty Donkey Performance, July 21, 2023
    • 11 replies
    • 1.7k views
    • 
    • Blue5.3l
    • July 24, 2023

25. 6.2L (2020) starts then dies immediately 1 2

    By whistleblower, October 11, 2022
    • 20 replies
    • 11.1k views
    • 
    • JerD
    • July 24, 2023

26. Borla S-Type Impressions Coming from Gibson (6.2)

    By truck_newbie, July 15, 2023   

    • borla
    • gibson
    • (and 2 more)

      Tagged with:

      • borla
      • gibson
      • type-s
      • touring
    • 0 replies
    • 1.3k views
    • 
    • truck_newbie
    • July 15, 2023