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Troubleshooting, Warranty & Recalls

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

908 topics in this forum

  1. Fuel pump priming when doors open?

    By LSX Z28,
    • 13 replies
    • 12.1k views

  2. Chime wont stop - how to disable??

    By In2racn,
    • 8 replies
    • 43.9k views

  3. Infotainment Audio Issues 1 2 3

    By kf9yr,
    • 30 replies
    • 29.5k views

  4. 2020 GMC3500 AT4 needing to replace DPF at 85K miles

    By Hog Hunter,
    • 2 replies
    • 861 views

  5. Rear Brakes Sticking

    By Brandon Darnell,
    • 6 replies
    • 1.5k views

  6. Invisible Trailer Camera: Worked on '20, Blank Screen on '24 1 2

    By Shawn T,
    • 26 replies
    • 24.6k views

  7. 2022 High Country HD retractable running board issues 1 2 3 4 5

    By mtbadbob,
    • 66 replies
    • 36.6k views

  8. In depth dive into the Allison 10spd valve body issue.

    By No F-bdy Bs,
    • 2 replies
    • 1.1k views

  9. Paint issues ? Chips and flakes

    By Ben Jardine,
    • 10 replies
    • 8.9k views

  10. Upper Steering Shaft replacement - 2020 HD

    By jeez,
    • 12 replies
    • 18.3k views

  11. Clicking/rattle noise under/behind steering column 2022 Silverado 2500HD

    By BasikLiberty,
    • 4 replies
    • 1.1k views

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

    By Texas Gasser,
    • 23 replies
    • 16.1k views

  13. Oil consumption issue in 2024 gas chevy 2500 1 2

    By GavinL6.6,
    • 19 replies
    • 5.2k views

  14. Night time Running lights/ parking lights don’t work 1 2

    By Duramax85,
    • 20 replies
    • 30.3k views

  15. Rampant rust brand new truck.

    By disappointed Duramax,
    • 4 replies
    • 1.1k views

  16. Fuel Gauge pegged at full

    By Chaser777,
    • 14 replies
    • 5.8k views

  17. 2024 Sierra 2500HD assist steps and cameras not working

    By Bobby Hill 702,
    • 0 replies
    • 337 views

  18. Recall today

    By typhoon186,
    • 1 reply
    • 1.1k views

  19. 2023 Sierra 2500 HD Electrical Issues

    By Magnolia Mama,
    • 2 replies
    • 859 views

  20. CarPlay calls issue on 2025 HD

    By euromade,
    • 5 replies
    • 1.3k views

  21. 2023 duramax 2500 shift flare

    By Deadstockpomp,
    • 3 replies
    • 1.1k views

  22. Tires Rubbing

    By Wmwbutler,
    • 1 reply
    • 1.1k views

  23. Service Parking Brake Light on

    By B Hayes,
    • 7 replies
    • 1.8k views

  24. Brake Fluid Bleeding....Vacuum vs Pressure?

    By SoCal Angler,
    • 12 replies
    • 2.8k views

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

    By SoCal Angler,
    • 17 replies
    • 17.8k views

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