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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. Uncomfortable driver seat in AT4 with vibrating seats inserts (safety package) 1 2 3 4 5

    By SierraAT4,
    • 74 replies
    • 38.9k views

  2. Anyone else waiting on a DEF tank for their unusable 3.0 L Duramax?

    By Oh Canada,
    • 14 replies
    • 17.1k views

  3. Radio Disappearing Favorites 1 2 3

    By ShamrockShooter,
    • 33 replies
    • 23.3k views

  4. Electronic Center Console Shifter (Park to Neutral?)

    By jaxcam02,
    • 2 replies
    • 20.8k views

  5. Radio Screen 1/3 blank

    By Mike2348,
    • 1 reply
    • 700 views

  6. Tpsm

    By WoodyLongbranch,
    • 3 replies
    • 697 views

  7. blank screen/trailering app

    By buelldude,
    • 4 replies
    • 4.8k views

  8. Brake pad monitor reset

    By Steve Morgese,
    • 2 replies
    • 651 views

  9. 2020 Silverado Rear Brakes

    By D265,
    • 2 replies
    • 1k views

  10. Changing the brakes on 2020 GMC Sierra 1500 1 2

    By Charles Busby,
    • 22 replies
    • 88.7k views
    • NAH
    • NAH

  11. Heated seats retrofit completed

    By schindles,
    • 9 replies
    • 6.4k views

  12. 19' Startup Noise? 1 2

    By dphel27,
    • 22 replies
    • 38.5k views

  13. Tailgate

    By Jess85,   
    • 3 replies
    • 726 views

  14. 2022 "REFRESH"?????

    By OmniCamaro,
    • 11 replies
    • 1.9k views

  15. New oil cooler lines missing sensor ports?

    By Redman Customs,
    • 1 reply
    • 2.9k views

  16. Humming Noise In Rear After Shut Off 1 2

    By cabledude,
    • 19 replies
    • 11.7k views

  17. Brakes = Backup Camera

    By Mike Creel,
    • 1 reply
    • 4.8k views

  18. Shifter locks out in park

    By Nick N,
    • 0 replies
    • 483 views

  19. 2020 trail boss click noise in rear

    By Dubtrailboss,
    • 1 reply
    • 859 views

  20. Hard shift from park to reverse 1 2

    By AD80,
    • 16 replies
    • 44.1k views

  21. How reliable is the 6.2 1 2

    By A muz,
    • 20 replies
    • 36.3k views

  22. OEM led taillights, hyper flash, flicker, sometimes not working

    By 89LincolnLSC,
    • 10 replies
    • 9.9k views

  23. Foam washer rear spoiler

    By matt grz,
    • 4 replies
    • 1.1k views

  24. USB Media worked on recent trip, but now doesn't

    By dawgfan,
    • 0 replies
    • 528 views

  25. Loud ticking from under truck

    By busta350,
    • 5 replies
    • 1.2k views
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