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Gen III and IV Small Block & Drivetrain

Air intakes, exhaust systems, do-it-yourself engine tuning, & drivetrain discussion specific to the 1999-2013 generation of full-size trucks and SUVs.

7,492 topics in this forum

  1. Please place all 2014+ topics in the Gen V forum

    By Zane,   
    • 1 reply
    • 13.7k views

  3. Mechanical Work

    By Guest Friz,
    • 0 replies
    • 40.6k views

  4. 08 avalanche 5.3 with older stand alone harness

    By Bigdawg4209,
    • 0 replies
    • 23 views

  5. Additives oils and gear lube?

    By Rough Patch,
    • 1 reply
    • 92 views

  6. 2008 5.3 175k - forward in reverse and neutral after repositioning in yard

    By Extinct,
    • 0 replies
    • 103 views

  7. Coil pack bracket

    By BigballR,
    • 2 replies
    • 132 views

  8. 4wd problem

    By clwilliams,
    • 2 replies
    • 306 views

  9. 2013 Sierra SLE engine quirk

    By BarryKH,
    • 3 replies
    • 650 views

  10. Help 05 silverado 4.3l v6 running issues

    By Hans Rasmussen,
    • 0 replies
    • 175 views

  11. Remove coil pack bracket

    By BigballR,
    • 0 replies
    • 174 views

  12. Misfiring 1 and 7

    By Dmitriy Ch.,
    • 1 reply
    • 211 views

  13. 2013 GMC Sierra 5.3 Oil Cooler Block Off Plate Plug

    By CBO,
    • 3 replies
    • 2k views

  14. mind boggling misfire/backfire everything has been checked HELP

    By Cory Martel,
    • 1 reply
    • 250 views

  15. Clicking noise 10-15 mph

    By Amckinney,
    • 3 replies
    • 841 views

  16. 2002 Chevy Silverado engine swap

    By Kurt Schaedig,
    • 1 reply
    • 361 views

  17. 3.08 to 3.73 Gear ratio on 2013 Silverado with 35s??

    By Matt2013LT,
    • 5 replies
    • 442 views

  18. Back to stock

    By kentyoder,
    • 1 reply
    • 304 views

  19. 2003 GMC Sierra BCM replacement

    By AIphabet,   
    • 0 replies
    • 369 views

  20. 8L90 transmission swap in 99-07 4WD trucks?

    By Chris Hansen,
    • 1 reply
    • 2.7k views

  21. 5.3 lack of power about 3500 rpm

    By 4x4chevyrig,
    • 0 replies
    • 344 views

  22. 2008 Sierra with 2" rough country leveling kit tire size

    By Austin Gravelle,
    • 0 replies
    • 324 views

  23. 04 Burb L59 PCM/Fuel Gauge Issue

    By GMT800Dude90,
    • 0 replies
    • 345 views

  24. 2013 Silverado Axle and Differentials chart?

    By elric,
    • 5 replies
    • 554 views

  25. Blue Exhaust Smoke

    By BigballR,
    • 3 replies
    • 426 views

  26. 2001 silverado 1500 5.3L secondary air monitor won’t complete

    By 01Silverado2wd,   
    • 1 reply
    • 1.1k views


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