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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. 2021 Sierra AT4 - heated mirrors?

    By GullLakeMi,
    • 7 replies
    • 22.8k views

  2. iPhone issue

    By Brian Ziegler,
    • 4 replies
    • 1.9k views

  3. New SD card message

    By mfd186,   
    • 7 replies
    • 2.7k views

  4. 3.0 LM2 DEF gauge stuck on full

    By fireaxxe,
    • 7 replies
    • 6.9k views

  5. Locking keys in car

    By JerseyMikeAT4,
    • 14 replies
    • 49.5k views

  6. Unused Hose Clip?

    By voided3,
    • 11 replies
    • 1k views

  7. Keyed Power Fuse - '20 Sierra Denali

    By w559jd1,
    • 3 replies
    • 5.9k views

  8. Drivers window issue and now truck wont send diagnostic info to the app

    By Shawn Morrissette,
    • 0 replies
    • 392 views

  9. V8 mode 1 2

    By Charm2999,
    • 19 replies
    • 40.9k views

  10. Lifter Ticking Noise on 2019 Silverado 1500 6.2

    By Dbogie,
    • 8 replies
    • 11.4k views

  11. Cab rear spoiler paint bubbling 1 2

    By gt tangerine,
    • 17 replies
    • 6.6k views

  12. 2020 6.2 L GMC Sierra 1500 starts then turns off P12A6

    By KennyMcCormick18,
    • 3 replies
    • 6.1k views

  13. Clank from rear end

    By Beddow05,
    • 1 reply
    • 749 views

  14. AndroidAuto

    By ejdziurka,   
    • 12 replies
    • 23k views

  15. Oil Pressure

    By Jeremiah Levy,
    • 3 replies
    • 39k views

  16. Door lock button on handle will unlock but wont lock doors

    By Robwcormack,
    • 2 replies
    • 9.7k views

  17. 3.0 Duramax engine knock or rattle noise

    By designzio,
    • 5 replies
    • 35.3k views

  18. singing and detonation at highway speed on accel

    By C Tucker,   
    • 3 replies
    • 1.1k views

  19. Rear Suspension Clunk - 2021 Silverado Crew 4WD

    By PonchoLocal1364,
    • 1 reply
    • 1.1k views

  20. Squeak From Exhaust?

    By BlancoSilverado,
    • 6 replies
    • 9k views

  21. UPDATED... 2 month old 2021 AT4 - 10 DTC’s on start this morning! 1 2

    By RCF71,
    • 17 replies
    • 2.8k views

  22. Located Source of Buzzing Noise Under Vehicle

    By Rook126,
    • 1 reply
    • 14.6k views

  23. Trailer lights flashing

    By plbass,
    • 11 replies
    • 17k views

  24. Running boards not deploying on 2019 Sierra Denali

    By Daniel Stolt,
    • 8 replies
    • 11.8k views

  25. 2020 Trail Boss Midnight Edition - Unique Cowl end caps?

    By TXTrlBoss,   
    • 1 reply
    • 1.8k views
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