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Troubleshooting, Warranty & Recalls

The help desk. Diagnose Google Built-In glitches, transmission shudder, check engine lights, and discuss warranty claims.

3,465 topics in this forum

  1. 2020 Sierra SLT A/C noise

    By Sierra20-20,
    • 8 replies
    • 11.3k views

  2. 2021 Silverado Humming noise when AC is on

    By Nestor,
    • 7 replies
    • 11k views

  3. 7 Pin Trailer plug/No voltage to 12V output to charge trailer battery

    By johnsills1,
    • 4 replies
    • 29.4k views

  4. Automatic Braking

    By Tom73,
    • 2 replies
    • 901 views

  5. Tow mirror whistle

    By Dersch,
    • 5 replies
    • 5.9k views

  6. 2022 GMC Sierra 1500 Limited Elevation - drone/humming noise coming from behind the IPC

    By anoxmous,
    • 1 reply
    • 2.2k views

  7. 2020-22 Duramax 3.0 Long Crank No Start

    By mac odi,
    • 7 replies
    • 11.8k views

  8. Cooled seats low air

    By Eodwoz,
    • 3 replies
    • 726 views

  9. new to the forum with a question, I just order a at4 6.2

    By Big_Kahuna,
    • 14 replies
    • 10.8k views

  10. Lifters collapse issue

    By Big_Kahuna,
    • 4 replies
    • 1.1k views

  11. Electrical connector locations/ schematic

    By cfell,
    • 0 replies
    • 634 views

  12. 21 Rst shudder / wobble feeling after level

    By Ry363,
    • 6 replies
    • 3.1k views

  13. Advice on Issues with 2019 Sierra 1 2

    By maizeblue28,
    • 15 replies
    • 10.5k views

  14. Tailgate mismatch?

    By LT17,
    • 4 replies
    • 3.4k views

  15. SD Card Removed Nav error? 1 2 3 4

    By Tritipnbeer,   
    • 58 replies
    • 170.5k views

  16. Dead battery and check engine light 1 2 3 4 6

    By 2020gmc,   
    • 83 replies
    • 114k views

  17. 2020 SLT mirrors are possesed

    By JAEDEE,
    • 2 replies
    • 772 views

  18. Part Name & Number for Tailgate Button Cover?

    By TexasKeith,
    • 14 replies
    • 11.4k views

  19. 2021 6.2L crankshaft pulley chipping paint, cracking?

    By Gfunky,   
    • 1 reply
    • 2k views

  20. gm garbage paint, what to do?

    By Duramax2021,
    • 13 replies
    • 3.5k views

  21. 2021 Silverado RST Infotainment Interface Lag

    By kslaggs,
    • 0 replies
    • 560 views

  22. GMC 2500 Denali Electrical Problems

    By David Droulard,   
    • 2 replies
    • 7.1k views

  23. CENTER CONSOLE 110V OUTLET NOT WORKING

    By Julien Dion,
    • 0 replies
    • 1.9k views

  24. radio question

    By 3point0,
    • 3 replies
    • 793 views

  25. Turning radio off

    By Tom73,
    • 9 replies
    • 8.8k views
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