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Troubleshooting & Recalls

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

744 topics in this forum

  1. My link voice commands not work for phone 1 2 3

    By Bill Wong,   
    • 35 replies
    • 69.5k views

  2. Driver door adjustment

    By Shepraid,
    • 0 replies
    • 906 views

  3. 2015 2500hd 6.0, no crank, no start!!!

    By 853 OKG,
    • 0 replies
    • 1.5k views

  4. Intermittent brake controller message w/0 trailer

    By Check trailer wiring,
    • 0 replies
    • 996 views

  5. I have a 2016 GMC SIERRA Z71 2500HD and Iam replacing the GM LG Wifi Bluetooth Telecommunications Module 84023338. Question, dose this module need to be programmed??

    By Mchardtke1,
    • 1 reply
    • 1.9k views

  6. Duel fuel tanks

    By Anthony J Clayton,
    • 5 replies
    • 25.9k views

  7. Does the spare tire have to be the same size (height) as the tires on the truck when using the spare?

    By BlueMax 23,
    • 3 replies
    • 2.2k views

  8. 2017 Silverado 2500HD Constant Whistle Sound Over 15mph

    By Wolfmansbrudda,
    • 7 replies
    • 3.1k views

  9. Weak acceleration

    By Racer593,
    • 5 replies
    • 1.9k views

  10. Infotainment Touchscreen Unresponsive & Rearview Mirror Non-functional

    By engineeerd,
    • 1 reply
    • 1.5k views

  11. No Power Anywhere-2016 GMC Sierra 2500Hd 6.0 gas

    By Longrodvonhugendong,
    • 2 replies
    • 6.4k views

  12. Engine/transmission 6.6has

    By Jp3313,
    • 0 replies
    • 1.2k views

  13. GM Genuine Parts 23337305 Trailer Brake Power Control Module

    By Hualdave,
    • 1 reply
    • 4.4k views

  14. Horn does not work when engine compartment is hot!

    By Mike Pyne,   
    • 2 replies
    • 1.7k views

  15. Torque specs for replacing Pitman and Idler arms

    By Mike Ross ID,
    • 4 replies
    • 44.6k views

  16. 2015 Silverado 2500HD 6.0 Check Engine light diagnosis need help.

    By rvhoehn,
    • 2 replies
    • 6.4k views

  17. 2019 GMC Sierra Can't Find Power Mirror Fuse

    By StuccoGuy,
    • 4 replies
    • 13.1k views

  18. Do 2500's with hydroboost and lane departure option have the "lane keep assist" feature as well where it steers for you?

    By DeathByNissan55,   
    • 5 replies
    • 2.7k views

  19. A/C issue

    By usgregp,
    • 2 replies
    • 1.4k views

  20. Water leak

    By David12,
    • 13 replies
    • 50.2k views

  21. Front End Torque specs ?

    By Kettlez,
    • 2 replies
    • 21.4k views

  22. Cooking fan operation

    By Dr.J.,
    • 1 reply
    • 1.2k views

  23. Shifting issues

    By jacob keese,
    • 1 reply
    • 1.1k views

  24. 2017 Chevy Silverado LTZ 2500HD 6.6 Duramax. The engine suddenly shut down comming off a stop sign.

    By Negrita2017,
    • 0 replies
    • 1.2k views

  25. Sunroof leak

    By Denali James,
    • 14 replies
    • 36k views
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