Troubleshooting, Warranty & Recalls

912 topics in this forum

1. New 2024 sitting in the barn undriveable

   By 64BAwagon, July 28, 2023
   • 12 replies
   • 2.6k views
   • 
   • 64BAwagon
   • August 2, 2023

2. New 2500 denali diesel Def warning less than 20 miles from leaving dealer

   By doozer78, August 1, 2020
   • 7 replies
   • 9.3k views
   • 
   • doozer78
   • August 4, 2020

3. New Infotainment System Update v148 / Radio won't shut off issue 1 2

   By SkidooSteve12, December 12, 2019
   • 16 replies
   • 54.7k views
   • 
   • Foldbak
   • April 8, 2021

4. New Peak DEF Platinum

   By bowtie2007, December 27, 2020
   • 1 reply
   • 1.7k views
   • 
   • mkeddie161
   • December 27, 2020

5. New Purchase 3500HD AT4 or Laramie 3500 1 2

   By jp687atc, December 28, 2020
   • 25 replies
   • 6.8k views
   • 
   • rblanch
   • January 6, 2021

6. New truck hot transmission

   By Evansdad, May 31, 2020
   • 8 replies
   • 7.2k views
   • 
   • SkidooSteve12
   • June 17, 2020

7. New truck need hitch ball for 5th wheel prep

   By GMC4Zee, April 4, 2021
   • 6 replies
   • 2.1k views
   • 
   • GMC4Zee
   • April 16, 2021

8. New Truck questions

   By marpel, March 14, 2022
   • 6 replies
   • 1.5k views
   • 
   • redwngr
   • March 20, 2022

9. Night time Running lights/ parking lights don’t work 1 2

   By Duramax85, May 1, 2021
   • 20 replies
   • 30.5k views
   • 
   • Jamie mire
   • May 6, 2025

10. No audible beep from rear sensors when backing

    By maxum3300, January 31, 2021
    • 2 replies
    • 31.4k views
    • 
    • Crazy Canuck
    • October 1, 2022

11. No Clock With Camera System

    By CVCWI, April 28, 2020
    • 9 replies
    • 1.5k views
    • 
    • ssowie
    • May 6, 2020

12. No onstar, gps,or nav

    By airplanefixer, February 4, 2022
    • 7 replies
    • 13.4k views
    • 
    • targ
    • August 28, 2024

13. No rear park assist with accessory connected?

    By cortez24, January 29, 2021
    • 0 replies
    • 775 views
    • 
    • cortez24
    • January 29, 2021

14. No rear parking lights (Wiring diagram request)

    By MFranco, April 6, 2022
    • 4 replies
    • 15.1k views
    • 
    • MFranco
    • April 6, 2022

15. No Trailer Connected Issue 1 2

    By Leon Baehre, March 7, 2020
    • 22 replies
    • 54.4k views
    • 
    • Darrell Moore
    • December 8, 2024

16. Noise near or under drivers side of cab

    By Dusilligaf, November 18, 2023
    • 2 replies
    • 2.3k views
    • 
    • Crazy Canuck
    • November 21, 2023

17. Noisy steering column 1 2 3 4 8

    By STGS, November 4, 2019
    • 108 replies
    • 89.1k views
    • 
    • Snlk
    • September 28, 2024

18. NOX Sensor Recalibration

    By Utah_ee, February 20, 2021
    • 3 replies
    • 6.1k views
    • 
    • Utah_ee
    • April 5, 2021

19. OBD2 circuit, need to locate fuse.

    By JLeosnow, November 18, 2024
    • 2 replies
    • 11k views
    • 
    • JLeosnow
    • November 18, 2024

20. Odd AC issue on start-up

    By UltimateToolReviews, July 28, 2025
    • 8 replies
    • 854 views
    • 
    • UltimateToolReviews
    • November 7, 2025

21. oem backup camera on fleet vehicle

    By garthruss, December 23, 2020
    • 0 replies
    • 734 views
    • 
    • garthruss
    • December 23, 2020

22. OEM Trailer Hitch Receiver - Impact tightened by shop

    By SoCal Angler, June 18
    • 14 replies
    • 546 views
    • 
    • Another JR
    • June 21

23. Oil Change on a 2023 L5P

    By Bob Mc Kenzie, December 13, 2024
    • 1 reply
    • 1.7k views
    • 
    • newdude
    • December 13, 2024

24. Oil consumption issue in 2024 gas chevy 2500 1 2

    By GavinL6.6, April 16, 2025
    • 19 replies
    • 5.4k views
    • 
    • Chuck FB
    • May 8, 2025

25. Oil Cooler lines

    By Cheekster96, January 27, 2024
    • 6 replies
    • 7.4k views
    • 
    • Blatant
    • January 30, 2024