Jump to content

Engines & Drivetrain

Tech for the 5.3L (L83), 6.2L (L86), and 4.3L V6. Tuning and 6L80 / 8L90 transmission support.

2,740 topics in this forum

  1. Bank 2 confusion AIs contradict each other

    By Rogerp,
    • 3 replies
    • 492 views

  2. 4 piston Brake Upgrade 1 2

    By Razr20,
    • 15 replies
    • 11.6k views

  3. 2018 Randomly Stalls and No Start - No Codes!

    By Kubs,
    • 14 replies
    • 2.2k views

  4. Seeing 2 MAF readouts, wildly far apart

    By DillbroSwaggins,
    • 1 reply
    • 294 views

  5. 2015 sierra 4x4 6l80 problems

    By dhandyman,
    • 2 replies
    • 450 views

  6. Sporadic clicking sound I can't ID

    By No Tyme,
    • 7 replies
    • 723 views

  7. First UOA on my 18 Sierra

    By ForestryGuy,
    • 2 replies
    • 394 views

  8. Seafoam in oil

    By countryguy1717,
    • 10 replies
    • 738 views

  9. Transmission fluid change 1 2

    By M1ck3y,
    • 23 replies
    • 1.9k views

  10. Edge Insight CTS3 not showing alcohol percentage

    By Crimson6.2L,
    • 4 replies
    • 601 views

  11. 6L80E additives

    By LoganBryant58,
    • 1 reply
    • 551 views

  12. Cab swap

    By aktr,
    • 0 replies
    • 169 views

  13. 4.3 vs 5.3 1 2 3 4 9

    By Manny254,
    • 125 replies
    • 95.6k views

  14. Check my thinking here.

    By Jay Ratliff,
    • 4 replies
    • 883 views

  15. NGK Ruthenium vs AC Delco Iridium spark plugs for 5.3? 1 2 3

    By greenoliver1,
    • 34 replies
    • 47.6k views

  16. Change atf or not? 1 2

    By countryguy1717,
    • 22 replies
    • 2.3k views

  17. Procharger D1SC to F1A

    By BlkBety,
    • 0 replies
    • 312 views

  18. Are these transmission parts? (8L90)

    By LordBusiness,
    • 1 reply
    • 669 views

  19. 5.3 VLOM Filter

    By bayouguy71,
    • 7 replies
    • 1.9k views

  20. Valvoline Restore & Protect

    By Spurshot,
    • 1 reply
    • 2.5k views

  21. Gear Swap

    By M1ck3y,
    • 9 replies
    • 772 views

  22. Dorman exhaust manifold (674-495 and 674-496) reviews

    By AFournier,
    • 0 replies
    • 559 views

  23. Preventative maintenance

    By countryguy1717,
    • 4 replies
    • 715 views
    • rav3
    • rav3

  24. How Long Do I Have Left?

    By midnightsilvy,   
    • 3 replies
    • 898 views

  25. BTR 220

    By M1ck3y,
    • 7 replies
    • 1.2k views
×
×
  • Create New...