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

1,039 topics in this forum

1. Active Fuel Management (AFM) and Dynamic Fuel Management (DFM) will not be available on certain 2021 model year Silverado 1500/Sierra 1500 pickups 1 2 3 4 7

   By MS3DALE, March 15, 2021
   • 92 replies
   • 65k views
   • 
   • SPASierra
   • May 3, 2023

3. NHTSA Recall Notice 24V-797

   By Transient, November 13
   • 7 replies
   • 491 views
   • 
   • johnnyquick
   • 8 hours ago

4. 2022 6.2 engine failure. 1 2 3 4 5

   By Texas_Toast, October 10, 2023
   • 65 replies
   • 46.5k views
   • 
   • Krista5518
   • 17 hours ago

5. Cat filters

   By Haufski762, Wednesday at 11:32 PM
   • 4 replies
   • 130 views
   • 
   • Jay P
   • Yesterday at 12:41 AM

6. Catch can confusion...

   By DK91105, Wednesday at 06:43 PM
   • 0 replies
   • 100 views
   • 
   • DK91105
   • Wednesday at 06:43 PM

7. How to diagnose lifter failure before it really goes south? 1 2 3

   By DK91105, October 25
   • 34 replies
   • 2.3k views
   • 
   • Colin Zwaschka
   • Wednesday at 03:32 PM

8. AFM/DFM Class action suit...finally 1 2

   By putz173, January 5, 2022
   • 25 replies
   • 9.1k views
   • 
   • lennybg
   • Monday at 06:04 PM

9. 5w30 oil 1 2 3 4 28

   By PunchT37, June 17
   • 407 replies
   • 21.3k views
   • 
   • KARNUT
   • Sunday at 04:45 PM

10. Lifter Failure Question 1 2 3 4

    By NorthernX31, April 3, 2023
    • 58 replies
    • 27.3k views
    • 
    • Mothclew50
    • Sunday at 12:39 AM

11. HELP! 6.2 engine seized up @ 108,000 miles

    By Pickichvino, November 14
    • 8 replies
    • 361 views
    • 
    • silveradosid
    • Saturday at 04:07 PM

12. Red fault engine air filter

    By Tmize, November 15
    • 2 replies
    • 159 views
    • 
    • silveradosid
    • Saturday at 03:40 PM

13. Transmission issues on 2023 Sierra w/10 speed transmission 1 2 3 4

    By R MacLeod, October 13, 2023
    • 58 replies
    • 29.8k views
    • 
    • LocoS1
    • November 15

14. Who has experience with doing a 2019 5.3 DFM DOD DELETE using DOD delete kit and HP Tuners 1 2

    By RobZ, January 10
    • 25 replies
    • 7.7k views
    • 
    • DK91105
    • November 14

15. Valve Spring Woes

    By WanderingSpleen, November 9
    • 8 replies
    • 359 views
    • 
    • DK91105
    • November 11

16. 2024 Rev GM Silverado Bed Cover too short

    By 24SilveradoDuramax1500, June 16
    • 1 reply
    • 507 views
    • 
    • N715DP
    • November 8

17. Can this be used

    By PunchT37, November 4
    • 2 replies
    • 352 views
    • 
    • PunchT37
    • November 4

18. 2023 5.3L sierra 1500 oil pump failure

    By Tykolt, November 4
    • 1 reply
    • 263 views
    • 
    • newdude
    • November 4

19. 3.0 Duramax timing chain stretch and low end knock

    By Edward1978, May 22
    • 5 replies
    • 5k views
    • 
    • njodell
    • November 3

20. 2023 Silverado 5.3

    By Silverado Blues, October 30
    • 1 reply
    • 306 views
    • 
    • Bikerjon
    • October 31

21. Have we moved on?

    By PunchT37, October 27
    • 2 replies
    • 460 views
    • 
    • PunchT37
    • October 28

22. 2024 GMC Sierra 1500 Elevation 2.7L Turbomax Oil Leak at 2000 Miles 1 2

    By Jason Ridge, April 10
    • 15 replies
    • 4.8k views
    • 
    • Tuishimi
    • October 26

23. Check engine light started flashing then stopped. P0300 1 2

    By Bigfoot98, July 6, 2021
    • 21 replies
    • 37.2k views
    • 
    • Flores2020
    • October 20

24. Cam Damage

    By syscomtek, September 26
    • 4 replies
    • 727 views
    • 
    • Cam C.
    • October 19

25. 2022 Sierra 1500 Limited 2.7L Turbo Exhaust Options

    By Roy White, November 14, 2023
    • 6 replies
    • 3.6k views
    • 
    • AlardPoirier
    • October 19

26. CEL comes on and tranny throws P0717 code

    By 21silverado2.7, October 17
    • 1 reply
    • 327 views
    • 
    • repairman54
    • October 18