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2014-2019 Engine, Driveline, & Exhaust

Technical Discussion surrounding the 5th generation of small block engines, driveline, 6/8/10 speed transmissions, and slew of factory and performance exhausts.
Includes direct injection, active fuel management, and the EcoTec3 4.3L V6 (LV3), 5.3L V8 (L83), 6.2L V8 (L86), and LB8 eAssist gas engines.

2,520 topics in this forum

  1. Aftermarket Catalytic Converter

    By laminarflow,
    • 5 replies
    • 669 views

  3. I have a question about traction/stability control

    By bjamesW32,
    • 2 replies
    • 537 views

  4. Humming upon Acceleration 2014 Sierra

    By Dennis77,
    • 8 replies
    • 5.2k views

  5. Transmission Thermostat Delete Pros vs. Cons 1 2 3 4 9

    By Eddie 70,
    • 120 replies
    • 78.7k views

  6. Transmission Squawk

    By Jared91,
    • 5 replies
    • 1.4k views

  7. Any reprogramming after replacing battery?

    By poconojoe,
    • 3 replies
    • 530 views

  8. 2015 gmc 5.3 whine noise

    By SLO4.8,
    • 0 replies
    • 366 views

  9. Swapping in 6.2L throttle body on 5.3L motor 1 2

    By flyingfool,
    • 21 replies
    • 28k views

  10. ls3-2015 gmc sierra 1500

    By ppayne124,
    • 2 replies
    • 551 views

  11. Chirping/Ticking noise from exhaust on 2018 Sierra 1500

    By Rberry,
    • 4 replies
    • 630 views

  12. Missed Driveline Maintenance intervals

    By liftedstepside,
    • 0 replies
    • 479 views

  13. Cylinder Misfire

    By jwroch,   
    • 6 replies
    • 1.7k views

  14. K2XX 4x4 passenger's side front inner axle seal replacement procedure (better than GM's)

    By SinisterZ71,
    • 1 reply
    • 699 views

  15. Engine Harness

    By Willard Burnight,
    • 2 replies
    • 453 views

  16. New Trans,possible upgrade? - 2015 serria 1500 denial

    By Big T8993,
    • 2 replies
    • 848 views

  17. 2014 Silverado with 6.2 19,000 miles bottom end of engine exploded in 1 2 3 4 6

    By nomadicdogg,
    • 84 replies
    • 25k views

  18. Torque converter

    By Max Raper,
    • 14 replies
    • 3.6k views

  19. Exhaust Adaptive Valve 1 2 3 4 10

    By MotoMedic,
    • 140 replies
    • 211.3k views

  20. New rear axle due to runout (Vibration issues)

    By movario,
    • 1 reply
    • 544 views

  21. Number of O2 Sensor on 2014-present GMC Sierra Models

    By noobauto,
    • 1 reply
    • 610 views

  22. S&B Cold Air Intake and check engine light

    By SoonerTA,
    • 11 replies
    • 9.5k views

  23. 2018 sierra 1500 denali suspension question

    By hackitz,
    • 3 replies
    • 675 views

  24. Lifter question

    By zac hale,
    • 1 reply
    • 955 views

  25. 2017 Chevy 3500 4x4

    By wdlittell,
    • 1 reply
    • 522 views

  26. Please help! 2015 GMC Sierra slt 6.2 misfire

    By Joseph J Pahler,
    • 12 replies
    • 2.9k views


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