Troubleshooting, Warranty & Recalls

912 topics in this forum

1. ABS kicks in while driving

   By cps68500, June 23, 2022
   • 2 replies
   • 944 views
   • 
   • bowtie2007
   • July 8, 2022

2. B&W for multipro tailgate FS

   By bharris515, January 9, 2020
   • 0 replies
   • 939 views
   • 
   • bharris515
   • January 9, 2020

3. 2025 3500 LTZ air conditioning slow to start cooling

   By vucelick, September 2, 2025
   • 4 replies
   • 934 views
   • 
   • UltimateToolReviews
   • November 6, 2025

4. Who designed the shift pattern on the automatic

   By TVJ, December 24, 2022
   • 1 reply
   • 933 views
   • 
   • Pryme
   • December 25, 2022

5. TRAILERING APP WON'T TURN ON

   By BnDRoadTrip, February 6, 2024
   • 1 reply
   • 930 views
   • 
   • riggone
   • June 4, 2025

6. TPMS lost a sensor then it magically came back miles later...

   By KC Desert, October 6, 2019
   • 3 replies
   • 927 views
   • 
   • KC Desert
   • November 21, 2019

7. TPMS for load sensing

   By Maninthesea, March 9, 2023
   • 5 replies
   • 927 views
   • 
   • Maninthesea
   • March 11, 2023

8. Duramax Engine temps while heavy towing

   By rblanch, August 23, 2021
   • 0 replies
   • 922 views
   • 
   • rblanch
   • August 23, 2021

9. Drivers inside front axle seal

   By sealberta, March 31, 2021
   • 0 replies
   • 921 views
   • 
   • sealberta
   • March 31, 2021

10. Rough cold idle in gear

    By Hagar68, August 31, 2020   

    • idle
    • transmisson
    • 0 replies
    • 920 views
    • 
    • Hagar68
    • August 31, 2020

11. 2020 High Country 2500 trailer won't disengage

    By John Weber, October 20, 2022
    • 6 replies
    • 919 views
    • 
    • gemarsh
    • November 2, 2022

12. Metallic Sound

    By Clay Colley, August 20, 2020
    • 1 reply
    • 916 views
    • 
    • Tomato
    • August 21, 2020

13. loaded fixr uppr in Vancouver $33k

    By pokismoki, January 14, 2022
    • 0 replies
    • 915 views
    • 
    • pokismoki
    • January 14, 2022

14. Headlight Wiring Harness Location

    By Todd Bingham, February 22, 2023
    • 0 replies
    • 915 views
    • 
    • Todd Bingham
    • February 22, 2023

15. DRW With Engine "Thud" & Steering Shake

    By Tomato, February 13, 2020
    • 6 replies
    • 911 views
    • 
    • MTU Alum
    • February 14, 2020

16. 2020 denali 3500 camera

    By Bruce Riley, July 27, 2020
    • 2 replies
    • 909 views
    • 
    • Gecko50
    • July 31, 2020

17. plug wire end attached to gas line

    By Gregg Staples, November 19, 2023
    • 4 replies
    • 909 views
    • 
    • Gregg Staples
    • November 23, 2023

18. 2020 gmc 3500 Denali order

    By Mm298, February 21, 2020
    • 4 replies
    • 906 views
    • 
    • PIP_AT4
    • March 9, 2020

19. Check trailer lights

    By Toomas, June 1, 2022
    • 1 reply
    • 903 views
    • 
    • shadow gray 2020 hd
    • June 1, 2022

20. 2024 L5P - Loose Mirror - Low Speed Rattle - Boost Noise

    By David Sebolsky, January 8, 2024
    • 0 replies
    • 900 views
    • 
    • David Sebolsky
    • January 8, 2024

21. tpms sensor issues

    By Keith_Schumaker, March 2, 2021
    • 0 replies
    • 899 views
    • 
    • Keith_Schumaker
    • March 2, 2021

22. 5th Wheel hitch wiring

    By LL2500HD, October 27, 2020
    • 1 reply
    • 895 views
    • 
    • mkeddie
    • October 27, 2020

23. Inner tail gate won't open

    By Ken Hill jr, November 28, 2021
    • 2 replies
    • 894 views
    • 
    • Ken Hill jr
    • November 30, 2021

24. Infotainment reboot

    By Daniel Bare, November 13, 2023
    • 0 replies
    • 893 views
    • 
    • Daniel Bare
    • November 13, 2023

25. Cruise set to “” message.

    By blamkin86, March 15, 2020
    • 9 replies
    • 887 views
    • 
    • XY74
    • April 5, 2020