Engines & Drivetrain (V8, Duramax, TurboMax)

1,140 topics in this forum

1. Identifying rear diff 2020 6.2 Z71

   By johnnyquick, August 10, 2024
   • 8 replies
   • 1k views
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   • Gangly
   • August 20, 2024

2. 2024 LZ0 transmission temperature and thermostat question.

   By Green02z71, August 13, 2024
   • 5 replies
   • 6.6k views
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   • newdude
   • August 14, 2024

3. External oil cooler, anyone have suggestions on a kit?

   By johnnyquick, July 30, 2024
   • 5 replies
   • 2.6k views
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   • johnnyquick
   • August 9, 2024

4. 2.7 Silverado Injector/valve issues, seafoam solution?

   By Dry, June 15, 2024
   • 7 replies
   • 6k views
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   • johnnyquick
   • August 8, 2024

5. 23 GMC Sierra 10 speed trans 1 2

   By Sean Rankin, January 25, 2024
   • 16 replies
   • 5k views
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   • redwngr
   • August 6, 2024

6. New 2023 5.3 with DFM. 1 2 3 4

   By Jimbeau, July 31, 2023
   • 45 replies
   • 52.5k views
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   • Jimbeau
   • August 6, 2024

7. Lifter replacement longevity review 21at4 1 2 3

   By Bob’s Sierra, April 25, 2024
   • 36 replies
   • 8.1k views
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   • Bob’s Sierra
   • August 5, 2024

8. 2020 Silverado 1500 custom 4.3 liter thermostat location

   By Jessiehouse, August 4, 2024
   • 0 replies
   • 929 views
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   • Jessiehouse
   • August 4, 2024

9. Lubegard Platinum trans fluid protectant

   By johnnyquick, August 1, 2024
   • 7 replies
   • 5.7k views
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   • Black02Silverado
   • August 1, 2024

10. 2020 Silverado 6.2 4WD 10 spd transmission pan removal

    By johnnyquick, August 1, 2024
    • 0 replies
    • 650 views
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    • johnnyquick
    • August 1, 2024

11. Driving 2019 6.2 with 10 speed in L9

    By SeeTire, June 19, 2024
    • 4 replies
    • 4.3k views
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    • MTY55
    • July 31, 2024

12. 2020 Silverado 6.2 a quart of oil every 1000 miles? 1 2

    By johnnyquick, April 21, 2024
    • 23 replies
    • 4.7k views
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    • Black02Silverado
    • July 29, 2024

13. 2021 Silverado 3.0L Diesel having vibrations on the interstate 70-80 mph 1 2

    By Armydave81, July 20, 2021
    • 22 replies
    • 13.8k views
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    • Saltybeach75
    • July 28, 2024

14. Driving in L10 vs. L9

    By TrueBlue, July 26, 2024
    • 2 replies
    • 2.5k views
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    • TrueBlue
    • July 26, 2024

15. What is normal oil pressure on a 2024

    By rrmccabe, July 11, 2024
    • 0 replies
    • 986 views
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    • rrmccabe
    • July 11, 2024

16. 2019 Silverado Trail Boss Fuel Distribution Issues

    By BAD_TrailBoss3, June 30, 2024
    • 1 reply
    • 566 views
    • 
    • newdude
    • June 30, 2024

17. 2020 3.0 Duramax Front Crank Oil Seal Leak

    By Jaketab, July 1, 2023
    • 7 replies
    • 14.3k views
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    • AZRyan
    • June 27, 2024

18. Blue DEF vs Platinum DEF?

    By rbdjr, March 8, 2022
    • 6 replies
    • 21.7k views
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    • Colossus
    • June 27, 2024

19. L87 6.2L Block failures up to 2/week at my dealer, model years 2021+. Listen for Ticks!

    By joshhibschman, June 13, 2024
    • 2 replies
    • 10.1k views
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    • mds47588
    • June 26, 2024

20. Question about DFM programming in regards to the ECM?

    By Cojam1, June 13, 2024
    • 3 replies
    • 3.5k views
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    • Cojam1
    • June 24, 2024

21. Transmission Fluid Change

    By Orlando_Castaway, June 22, 2024
    • 3 replies
    • 1.6k views
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    • Black02Silverado
    • June 23, 2024

22. transfer case question

    By typhoon186, June 11, 2024
    • 4 replies
    • 1.4k views
    • 
    • typhoon186
    • June 13, 2024

23. DMAX 3.0 Code P26C0

    By Phatty, August 14, 2020
    • 9 replies
    • 11k views
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    • mjm-1957
    • June 5, 2024

24. 2019 L84/5.3 AFM/DOD?

    By Ed Baudoux, April 4, 2024
    • 4 replies
    • 4.5k views
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    • Gangly
    • June 3, 2024

25. 2021 5.3 8 speed whining and sluggish under power

    By turnertr, May 28, 2024
    • 2 replies
    • 842 views
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    • turnertr
    • June 1, 2024