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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.

2,562 topics in this forum

  1. 2014+ Engine & Transmission Tuning 1 2 3 4 72

    By pendragon,   
    • 1.1k replies
    • 417.9k views

  3. 2014+ AFM (Active Fuel Management) 1 2 3 4 36

    By Ron.s,
    • 535 replies
    • 258.2k views

  4. 2014+ Exhaust Systems & Mufflers 1 2 3 4 203

    By Escalade1979,
    • 3k replies
    • 768.7k views

  5. 2014+ Intakes (CAI) & Air Filters 1 2 3 4 62

    By GMC-AT,
    • 917 replies
    • 353.1k views

  6. 2014+ Gas Mileage (MPG) Topic 1 2 3 4 104

    By BringTheRain403,
    • 1.6k replies
    • 429.2k views

  7. Front wheel bearings???

    By mikeyk101,
    • 5 replies
    • 485 views

  8. Just had all afm lifter replaced and failed again 3 days later less than 100 miles 1 2

    By Payton34,
    • 17 replies
    • 7.5k views

  9. 2014 Sierra 1500 - Front diff leak

    By Neil G,
    • 2 replies
    • 112 views

  10. Engine swap

    By Dubwatson86,
    • 2 replies
    • 737 views

  11. 6L80E thermostatic bypass valve replacement and Bulletin #21-NA-199

    By Andrew18,   
    • 7 replies
    • 17.6k views

  12. Mid-Length Headers

    By rlcole321,
    • 8 replies
    • 969 views

  13. AFM Delete - Which kit is preferred?

    By Nickhop,
    • 3 replies
    • 1k views

  14. 2015 GMC Sierra 1500 DOD Lifter Replacement

    By mamarinelli,
    • 5 replies
    • 418 views

  15. 100,000 Mile Spark Plugs

    By TheRiver,
    • 3 replies
    • 338 views

  16. TRANSMISSION RANGE SWITCH

    By BlkDenali6.2,
    • 0 replies
    • 300 views

  17. 2014 Silverado Transmission/Torque Converter help

    By jwoody28,
    • 4 replies
    • 524 views

  18. click, no start

    By josney,
    • 2 replies
    • 308 views

  19. Big Cam, Big Gains

    By SeekAndDestroy,
    • 2 replies
    • 1.5k views

  20. Swapping an L86(6.2) into a 5.3 (L83)

    By Gavin Faulkner,
    • 3 replies
    • 1.9k views

  21. 2016 Silverado LT - is my transmission going? Maybe my TC?

    By InsuredByBeretta,
    • 5 replies
    • 710 views

  22. Service 4wd message 2017 1500 Silverado

    By Cd264,
    • 2 replies
    • 384 views

  23. Statistically, How Prevalent Are Transmission, AFM, and Lifter Issues?

    By Muley,
    • 7 replies
    • 767 views

  24. Headers: long tube vs shorty's

    By hordy240,
    • 2 replies
    • 639 views

  25. Salvaging a L86 6.2L V8

    By CadillacLuke24,
    • 14 replies
    • 1.5k views

  26. 5.3L normal idle rpm 1 2

    By roweac,
    • 23 replies
    • 69.6k views


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