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Troubleshooting & Recalls

Diagnose DEF heater failures, CP4 pumps, and electrical issues.

744 topics in this forum

  1. Trans shifts like its in tow haul but not

    By ben hale,
    • 1 reply
    • 761 views

  2. 2019 L5P Droaning/Resonating/Groaning Noise

    By OlRedL5P,   
    • 1 reply
    • 1.6k views

  3. 2015 2500HD 6.0L squeal on startup

    By corn18,
    • 8 replies
    • 4k views

  4. Clear fluid leaking

    By Shane S,
    • 8 replies
    • 12.5k views

  5. 2019 L5P Alignment/Front End Issues

    By OlRedL5P,   
    • 3 replies
    • 3.7k views

  6. Multiple warning messages, guages read zero, intermittant elec problem

    By Motion Clone,
    • 0 replies
    • 776 views

  7. Turn key and dash goes dark for 5 seconds before engine starts to crank

    By Evan Martin,
    • 2 replies
    • 1.2k views

  8. All warning lights on

    By DBeau,
    • 9 replies
    • 26.5k views

  9. Brake Lights on

    By JMichaelA08,
    • 1 reply
    • 892 views

  10. 2018 2500hd Chevy Interchangeable Parts

    By laser45v,
    • 4 replies
    • 2k views

  11. No odometer/speedometer 2019 2500

    By Forgot,
    • 1 reply
    • 1k views

  12. 2018 Duramax Coolant Temp?

    By 4thDmax,
    • 6 replies
    • 15.9k views

  13. Infotainment Display & instrument cluster display issues/gremlins

    By retiredinVt,   
    • 3 replies
    • 2.7k views

  14. 2018 Silverado 3500 Duramax - Steering wheel randomly jerking/pulling/tugging while driving slow speeds

    By aratz,
    • 3 replies
    • 5.5k views

  15. Very upset with 2015 1500

    By Lets Go,
    • 3 replies
    • 1.2k views

  16. Courtesy lights

    By jms,
    • 0 replies
    • 628 views
    • jms
    • jms

  17. Passenger side water leak

    By Peyton88,
    • 3 replies
    • 4.8k views

  18. Rear Seat Frame Bumper

    By Red6.2,
    • 0 replies
    • 712 views

  19. Schematic for 2017 Silverado (wireless charging)

    By rrmccabe,
    • 3 replies
    • 1.6k views

  20. Driver side door sensor signalling door open and driver side window controls not working

    By Lcharchun,
    • 1 reply
    • 1.4k views

  21. Passenger outside mirror

    By Nolesser Man,   
    • 0 replies
    • 903 views

  22. 2015 GMC Sierra 6.2 P0308 Misfire Cylinder 8 CANT FIGURE IT OUT 1 2 3

    By The Pig Dusters,   
    • 42 replies
    • 49.5k views

  23. None

    By John watkins sr.,
    • 0 replies
    • 979 views

  24. Crazy door locks

    By DmaxHugh,
    • 5 replies
    • 20.3k views

  25. 2016 2500 LTZ INFOTAINMENT TOUCH SCREEN

    By DLMc,
    • 0 replies
    • 1.1k views

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