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Troubleshooting, Warranty & Recalls

The repair shop. Diagnose emissions codes, electrical issues, Allison transmission behavior, and recall updates.

911 topics in this forum

  1. Every cold start no power - reboot (restart) needed

    By In2racn,
    • 1 reply
    • 823 views

  2. Excessive front tire wear

    By Jaybud1104,
    • 2 replies
    • 7.1k views

  3. Exhaust Brake concerns

    By DBaker,
    • 4 replies
    • 1.9k views

  4. Factory battery life length 1 2

    By Randal Scott,
    • 15 replies
    • 2.2k views

  5. Factory Manual 1 2 3

    By SSchup,
    • 42 replies
    • 2.4k views

  6. Failed Idler Arm at 48k miles - 2022 GMC 2500

    By UltimateToolReviews,
    • 13 replies
    • 1.7k views

  7. Fan speed doesn’t return after CarPlay phone call

    By EXSlider400,
    • 5 replies
    • 582 views

  8. Feeling Vibration and Jiggles in 2024 HD Gasser Steering Wheel 1 2

    By Texas Gasser,
    • 23 replies
    • 16.4k views

  9. Fender flare light not working no power

    By Cootr68,
    • 0 replies
    • 2k views

  10. First long trip with the 2024 6.6 gas and the faux Allison 10 spd

    By 64BAwagon,
    • 7 replies
    • 15.3k views

  11. First World Problem-Sirius XM

    By CRApex,
    • 3 replies
    • 2.5k views

  12. Flashing trailer lights

    By insidethreat07,
    • 7 replies
    • 3.9k views

  13. Flexride

    By lookingatgmagain,
    • 3 replies
    • 4.2k views

  14. Forgetful truck: Settings randomly changing/reverting

    By UWSkier,
    • 2 replies
    • 839 views

  15. Front camera replacement?

    By Nick Taylor,
    • 3 replies
    • 9.9k views

  16. Front Park Assist AEV Bumper

    By JW2024,
    • 4 replies
    • 787 views

  17. Front Suspension and Chassis Lubrication - # of Zircs, Best Grease Gun, and OEM Grease for Lubing? 1 2

    By SoCal Angler,
    • 17 replies
    • 18.2k views

  18. Front suspension torsion bars

    By Jim Aldrich,
    • 4 replies
    • 1.8k views

  19. Fuel Filter Fizzing

    By AT4-DMAX-HD,
    • 0 replies
    • 693 views

  20. Fuel Filter Re-Set on 2021 Silverado 2500HD with Duramax Diesel .....

    By Tucson Jack,
    • 1 reply
    • 1.2k views

  21. Fuel filter reset

    By Irish80,
    • 10 replies
    • 62.1k views

  22. Fuel Gauge pegged at full

    By Chaser777,
    • 14 replies
    • 6k views

  23. Fuel mileage getting worse….. 1 2

    By Corporate72,
    • 24 replies
    • 6.3k views

  24. Fuel pump priming when doors open?

    By LSX Z28,
    • 13 replies
    • 12.3k views

  25. Full lock at turn noise

    By GMdude2020,
    • 0 replies
    • 1.5k views
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