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

1,039 topics in this forum

1. Schaeffer's oil 1 2

   By Big_Kahuna, May 8, 2022
   • 15 replies
   • 4.3k views
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   • Dejadoo
   • May 11, 2022

3. 2019 silverado high country, early morning transmission jerky

   By 2019 silverado high countr, October 15, 2021
   • 3 replies
   • 2k views
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   • mandrewbot3k
   • May 4, 2022

4. Another 2021 Sierra lifter failure help needed 1 2

   By JayinNH, April 18, 2022
   • 18 replies
   • 6.1k views
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   • Adamace1
   • May 3, 2022

5. 2019 RST cylinder misfire

   By Jimmyc2k2, May 2, 2022
   • 5 replies
   • 4.7k views
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   • Jimmyc2k2
   • May 2, 2022

6. 2” straight pipe

   By Avery Dameron, April 27, 2022
   • 4 replies
   • 1.1k views
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   • Grover67
   • April 28, 2022

7. 5.3L Serpentine Belt Dust Residue - How Much Is Normal?

   By Anacortes Army Guy, April 21, 2022
   • 1 reply
   • 1k views
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   • voided3
   • April 27, 2022

8. Duel mode exhaust

   By Ernest Crist, April 21, 2022
   • 1 reply
   • 729 views
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   • Byrds8
   • April 25, 2022

9. Exhaust tip replacement

   By Anon12345, April 18, 2022
   • 7 replies
   • 2.8k views
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   • TNTSierra
   • April 19, 2022

10. Truck felt slower after exhaust mod, so I tried out my new dragy…

    By SILVER SLED, April 17, 2022
    • 10 replies
    • 2.6k views
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    • SILVER SLED
    • April 18, 2022

11. 3.0 Duramax in Extreme Cold

    By [email protected], March 4, 2022
    • 3 replies
    • 4.1k views
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    • YZ-Dave
    • April 15, 2022

12. Range D.F.M. disabler 1 2 3

    By Jac365, May 5, 2020
    • 39 replies
    • 25.9k views
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    • ESierra
    • April 13, 2022

13. Dreaded Lifter Failure in 2021 GMC Sierra 1500 1 2 3

    By Nick Reynolds, February 8, 2022
    • 41 replies
    • 27.4k views
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    • Dirk Dingle Berry
    • April 13, 2022

14. Throaty exhaust...2020 Sierra 1500 6.2 Denali

    By Woodchopper, April 10, 2022   

    • 2020 Sierra 1500 6.2 Denali
    • 3 replies
    • 1.5k views
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    • TxTruckMan
    • April 12, 2022

15. 2.7L Intake,Exhaust, and tune/programmer

    By Amitchell, April 7, 2022
    • 4 replies
    • 4.2k views
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    • TNTSierra
    • April 12, 2022

16. 8l90 transmission working temp

    By Giantpeaches, February 24, 2020
    • 13 replies
    • 16k views
    • 
    • Byrds8
    • April 11, 2022

17. Whats the wheel hp and torque of the 5.3 and 6.2? 1 2

    By Anon12345, March 22, 2022
    • 24 replies
    • 18.9k views
    • 
    • GETGONE
    • April 8, 2022

18. Corsa vs. Borla on a 6.2...

    By Badbird2000, March 23, 2022
    • 4 replies
    • 5.9k views
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    • Gunndy Gaming
    • April 8, 2022

19. Single factory to dual exhaust 1 2

    By 2liter, June 6, 2020
    • 17 replies
    • 15k views
    • 
    • LUCOR3
    • April 6, 2022

20. RCA Garage?

    By Bigfoot16, February 28, 2020
    • 8 replies
    • 14.8k views
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    • jldavidian
    • April 2, 2022

21. Sloppy 2.7 oil change 1 2

    By Acpantera, January 2, 2022
    • 15 replies
    • 7.1k views
    • 
    • Acpantera
    • April 1, 2022

22. How far on bad lifters?

    By AirForceAngler, March 13, 2022
    • 9 replies
    • 1.7k views
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    • Desrunner
    • March 28, 2022

23. 6.2 l87 engine, where to find build date for the engine?

    By Anon12345, March 23, 2022
    • 3 replies
    • 4.1k views
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    • WeGone
    • March 28, 2022

24. Another Flapper Valve Question

    By 70rsss, April 10, 2019
    • 13 replies
    • 4k views
    • 
    • Byrds8
    • March 26, 2022

25. GM Performance Exhaust- Borla ATAK Conversion

    By AT4Play, November 1, 2021
    • 4 replies
    • 2.7k views
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    • Steven Tran
    • March 24, 2022

26. 20 Sierra 6.2L rear main seal leak for the 4th time. 1 2

    By LilBean1982, March 12, 2022
    • 23 replies
    • 13.1k views
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    • pokismoki
    • March 21, 2022