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

1,039 topics in this forum

1. 4.3 muffler replacement

   By 20silverado20, September 24, 2020
   • 0 replies
   • 387 views
   • 
   • 20silverado20
   • September 24, 2020

3. Hard downshift

   By Looch403, September 23, 2020   

   • 5.3L Vortec
   • elevation
   • (and 4 more)

     Tagged with:

     • 5.3L Vortec
     • elevation
     • X31
     • 2020
     • 10 speed transmission
     • issues
   • 4 replies
   • 5.9k views
   • 
   • bshort
   • September 23, 2020

4. Vibration

   By Douglas L Self, September 21, 2020
   • 5 replies
   • 5k views
   • 
   • Boondock
   • September 22, 2020

5. AFE exhaust 6.2? 1 2

   By Robwcormack, April 22, 2019
   • 26 replies
   • 8.4k views
   • 
   • STX30MAC
   • September 21, 2020

6. Any truth to the early 2019's used the L83/6speed combination?

   By Jself, September 18, 2020
   • 4 replies
   • 1.7k views
   • 
   • CamGTP
   • September 18, 2020

7. 5.3 swap to 6.2

   By Philippe C, September 17, 2020
   • 6 replies
   • 17.7k views
   • 
   • CamGTP
   • September 18, 2020

8. Anyone throw on a Flowmaster FlowFX Cat-Back?

   By derek_05_07, August 21, 2020
   • 4 replies
   • 1.8k views
   • 
   • Ed/2020RST
   • September 17, 2020

9. Borla Touring vs Borla S Type for 6.2 1 2

   By BluegrassMotorsport, September 5, 2020
   • 15 replies
   • 17.5k views
   • 
   • TNTSierra
   • September 16, 2020

10. Any way to tell what mode your engine is in?

    By Resqu2, September 8, 2020
    • 4 replies
    • 1.6k views
    • 
    • Chris Callanan
    • September 15, 2020

11. GM CAI or Rotofab for 6.2?

    By GS357 S, September 5, 2020   

    • 2020 6.2 Cold air intake
    • 14 replies
    • 6.3k views
    • 
    • Ed/2020RST
    • September 14, 2020

12. New Headers available 1 2 3 4

    By brianc636, April 28, 2019
    • 52 replies
    • 12.7k views
    • 
    • Grumpy Bear
    • September 13, 2020

13. 2039 Mile Tow with GMC 3.0 SLT

    By Sierra 3.0, June 30, 2020
    • 12 replies
    • 6.7k views
    • 
    • k_j
    • September 11, 2020

14. Factory exhaust cold air upgrade package

    By DoubleDD, September 10, 2020
    • 6 replies
    • 1.1k views
    • 
    • CamGTP
    • September 10, 2020

15. 3.0L 2nd Check Engine Light in 5000 miles...

    By Benzo1, July 14, 2020
    • 11 replies
    • 7.3k views
    • 
    • dedriver
    • September 9, 2020

16. First trip with the 3.0L Duramax 1 2

    By swervin36, July 15, 2020
    • 24 replies
    • 4.9k views
    • 
    • Ojustracing
    • September 5, 2020

17. 3.0 GMC Price Reduction

    By Z71RAD88, September 3, 2020
    • 1 reply
    • 817 views
    • 
    • redvettez06
    • September 4, 2020

18. 2020 3.0 Duramax - Code P2002

    By akawally, February 27, 2020   

    • 3.0
    • LM2
    • (and 1 more)

      Tagged with:

      • 3.0
      • LM2
      • AT4
    • 11 replies
    • 21.2k views
    • 
    • SWBuckeye
    • September 4, 2020

19. 2020 LT Trail Boss

    By skully85, August 23, 2020
    • 3 replies
    • 3.1k views
    • 
    • TNTSierra
    • September 3, 2020

20. Dealer saying Transmission shudder issue over

    By Lawsnook, June 3, 2020
    • 10 replies
    • 3.5k views
    • 
    • Jay P
    • September 1, 2020

21. Transmission Temperature Issues

    By ChevyDuneGuy, August 9, 2020
    • 5 replies
    • 11.2k views
    • 
    • ChevyDuneGuy
    • August 30, 2020

22. Using tow haul when and where

    By PBANDJ, June 3, 2020
    • 11 replies
    • 8.1k views
    • 
    • Bobv07662
    • August 25, 2020

23. Any Driveline/Pinion Angle Experts out there?

    By hotrodz37, August 1, 2020
    • 11 replies
    • 6k views
    • 
    • kpanza
    • August 25, 2020

24. What would you buy? 1 2 3

    By Z71RAD88, August 12, 2020
    • 32 replies
    • 3.7k views
    • 
    • redwngr
    • August 24, 2020

25. 2020 GMC Sierra 1500 4WD 6.2L Settings for "Pull Through" Carwash

    By MrGadget, August 21, 2020   

    • 4WD
    • Carwash
    • (and 2 more)

      Tagged with:

      • 4WD
      • Carwash
      • transfercase
      • settings
    • 11 replies
    • 7.2k views
    • 
    • redwngr
    • August 22, 2020

26. Resonators gone new mesh screens replace them 1 2 3 4 5

    By Black02Silverado, August 27, 2018
    • 67 replies
    • 66.8k views
    • 
    • Ratchetarms
    • August 22, 2020