Engines & Drivetrain (V8, Duramax, TurboMax)

1,140 topics in this forum

1. 21 tb 6.2 exhaust ideas? 1 2

   By Lpfm1990, May 4, 2021
   • 21 replies
   • 5.1k views
   • 
   • KARNUT
   • December 8, 2021

2. Anyone else had issues with faulty motor mounts causing a shake/vibration at idle

   By Rcfire, October 15, 2021
   • 5 replies
   • 19.2k views
   • 
   • M1ck3y
   • December 5, 2021

3. Dual Exhaust Picture Request

   By ls5454ss, November 23, 2021
   • 1 reply
   • 1.1k views
   • 
   • Diamondd817
   • December 4, 2021

4. dexosD?

   By fireaxxe, October 23, 2021
   • 10 replies
   • 11.4k views
   • 
   • Black02Silverado
   • December 3, 2021

5. Lifter Failure club

   By davew8572, December 3, 2021
   • 2 replies
   • 1.2k views
   • 
   • Anacortes Army Guy
   • December 3, 2021

6. 2019 silverado high country, early morning transmission jerky

   By 2019 silverado high countr, October 15, 2021
   • 9 replies
   • 9.3k views
   • 
   • M1ck3y
   • December 3, 2021

7. 2020 3.0 Duramax 1st Blackstone Report 1 2 3 4

   By Time2gofishing1980, February 16, 2021
   • 57 replies
   • 13.3k views
   • 
   • rbdjr
   • December 2, 2021

8. Looking for pictures of 3/5 drops and 4/6 drops.

   By DaveyD6364, November 23, 2021
   • 1 reply
   • 1k views
   • 
   • TxTruckMan
   • November 30, 2021

9. Low speed clunking. Say 20mph stop and go traffic.

   By Moledigger2019, October 15, 2021
   • 5 replies
   • 2.5k views
   • 
   • Phantom 4D
   • November 30, 2021

10. Oil change 1 2

    By Avery Dameron, November 10, 2021
    • 23 replies
    • 3.9k views
    • 
    • KARNUT
    • November 28, 2021

11. Straight pipes = tickets 1 2

    By Avery Dameron, November 13, 2021
    • 19 replies
    • 2.7k views
    • 
    • Transient
    • November 28, 2021

12. Mufflers today 😭 1 2

    By Avery Dameron, November 19, 2021   

    • dynomax
    • x pipe
    • (and 3 more)

      Tagged with:

      • dynomax
      • x pipe
      • straightpipe
      • 5.3
      • police
    • 19 replies
    • 3.4k views
    • 
    • Transient
    • November 28, 2021

13. H pipe inquiry

    By Avery Dameron, November 17, 2021
    • 7 replies
    • 1.2k views
    • 
    • M1ck3y
    • November 27, 2021

14. Steering wheel alignment

    By Snakes709, November 10, 2021
    • 7 replies
    • 11.4k views
    • 
    • rbdjr
    • November 26, 2021

15. 5.3 vs 6.2 drag race 1 2 3 4 6

    By 19AT4, May 17, 2020
    • 78 replies
    • 36.4k views
    • 
    • M1ck3y
    • November 24, 2021

16. My at4 does not have black side mirrors?

    By KTX556, November 12, 2021
    • 2 replies
    • 1.1k views
    • 
    • MG386
    • November 23, 2021

17. PF63E vs PF63 ?

    By milkmaster, November 14, 2021
    • 5 replies
    • 16.7k views
    • 
    • MG386
    • November 23, 2021

18. 2021 GMC Sierra V8 Lifter Damage 1 2 3

    By Greystone21, May 11, 2021
    • 34 replies
    • 29.1k views
    • 
    • Javier Rubio
    • November 23, 2021

19. at4 with 6.2 rough idle

    By cbprov, September 22, 2019
    • 10 replies
    • 21.6k views
    • 
    • Kilgore Trout
    • November 21, 2021

20. Performance Upgrade Package 1 2 3 4 9

    By brothernov, March 18, 2019
    • 132 replies
    • 95.5k views
    • 
    • putz173
    • November 17, 2021

21. 3.0 Duramax AT4 - Great so far 1 2

    By MPX1, May 22, 2021
    • 18 replies
    • 11k views
    • 
    • MPX1
    • November 17, 2021

22. 2.7l Engine Mods, Please help. 1 2 3 4

    By teej750, February 20, 2020
    • 46 replies
    • 69.8k views
    • 
    • deheavychevy
    • November 13, 2021

23. 2021 Sierra Denali 6.2L Engine or Exhaust Chirp Noise 1 2

    By Pbrad074, July 4, 2021
    • 15 replies
    • 12.2k views
    • 
    • Transient
    • November 12, 2021

24. GM offer $100.00 to check 3.0 Duramax

    By Ioniq MPG, August 11, 2021
    • 7 replies
    • 2.5k views
    • 
    • Ioniq MPG
    • November 12, 2021

25. Rattling nose

    By De9mize, November 8, 2021   

    • noise
    • 0 replies
    • 3.4k views
    • 
    • De9mize
    • November 8, 2021