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Troubleshooting, Warranty & Recalls

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

912 topics in this forum

  1. Oil leak with 150 miles? 2022 2500 gas 1 2

    By Pryme,
    • 18 replies
    • 9.5k views

  2. Onstar box/module location

    By Rocky Hamilton,
    • 0 replies
    • 2.6k views

  3. Onstar fuse location?

    By Tomski12,
    • 6 replies
    • 20.6k views

  4. Operating Temperature

    By bigman32hockey,
    • 1 reply
    • 2.1k views

  5. Outside air temp reading won't update

    By CRApex,
    • 3 replies
    • 1.2k views

  6. Outside Temperature Reading High Consistently

    By AT4X Steve,
    • 0 replies
    • 191 views

  7. Outside Temperature Sensor

    By JW2020,
    • 1 reply
    • 1.1k views

  8. Overhead console

    By TheGeek,
    • 4 replies
    • 1.6k views

  9. Paint issues ? Chips and flakes

    By Ben Jardine,
    • 10 replies
    • 9.1k views

  10. Paint looking unfinished

    By Carolina,
    • 3 replies
    • 1.5k views

  11. Park assist in 2020

    By The Bopper,
    • 3 replies
    • 1.9k views

  12. Parking lights

    By Cameron morse,
    • 0 replies
    • 845 views

  13. Part Throttle Surge

    By L8T,
    • 2 replies
    • 1.6k views
    • L8T
    • L8T

  14. Passenger battery distribution block diagram

    By Gunnar Jacobson,
    • 7 replies
    • 45.9k views

  15. Passenger power window

    By FLTRXS,
    • 3 replies
    • 666 views

  16. Passenger Window Not Working

    By bja37,
    • 3 replies
    • 1.2k views

  17. Password confirmation?

    By Limelight,
    • 5 replies
    • 8.8k views

  18. Phone hotspot not connecting

    By nparker76,
    • 0 replies
    • 271 views

  19. Please help CAI

    By tn819422,
    • 8 replies
    • 1.4k views

  20. plug wire end attached to gas line

    By Gregg Staples,
    • 4 replies
    • 906 views

  21. Poor fuel mileage on 2024 Duramax 1 2 3

    By MesaRat,
    • 30 replies
    • 48.9k views

  22. Pop/clunk

    By 22 6.6gasser,
    • 0 replies
    • 635 views

  23. Possible Fluid leak

    By bowtie2007,
    • 4 replies
    • 3.4k views

  24. Power Folding Trailering Mirrors Malfunction

    By Mr. Jim,
    • 3 replies
    • 8.9k views

  25. Power Outlet Switch light stays on dim green

    By Killjoy1977,
    • 5 replies
    • 8.7k views

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