2015-2019 Silverado & Sierra HD Troubleshooting

655 topics in this forum

1. Several Codes Help Diagnose

   By Ryan Darrington, January 30, 2021
   • 1 reply
   • 1.3k views
   • 
   • dragstang86
   • June 21

3. U1510 then p059f

   By Rocky Horn, June 17   

   • Active grill shutters
   • 2 replies
   • 142 views
   • 
   • Rocky Horn
   • June 19

4. WiFi hotspot problem and it fixed itself?

   By calgator73, April 13, 2017
   • 5 replies
   • 5.3k views
   • 
   • Theynine
   • June 8

5. Tailgate Lock wiring...

   By Gunn, November 20, 2017   

   • sierra tailgate lock wiring harness
   • 5 replies
   • 8.8k views
   • 
   • Sammy jones
   • June 6

6. Progressively Low fuel mileage

   By Butch59, May 27
   • 2 replies
   • 300 views
   • 
   • Grumpy Bear
   • May 29

7. Headlight harness losing voltage

   By Denali2500Indy, August 29, 2018
   • 2 replies
   • 2k views
   • 
   • Digdanger
   • May 7

8. 6L80 Transmission unusual behavior?

   By rviscuso, February 8   

   • 6l80
   • transmission
   • (and 4 more)

     Tagged with:

     • 6l80
     • transmission
     • lock
     • unlock
     • tcc
     • lurching
   • 13 replies
   • 2.3k views
   • 
   • rviscuso
   • May 3

9. Radio fan stays on

   By Andrew18, April 28   

   • Radio
   • duramax
   • (and 6 more)

     Tagged with:

     • Radio
     • duramax
     • 2018
     • Silverado
     • head unit
     • fan
     • noise
     • after key off
   • 0 replies
   • 273 views
   • 
   • Andrew18
   • April 28

10. Battery Amp Meter

    By ame2entre, April 3
    • 7 replies
    • 621 views
    • 
    • ame2entre
    • April 13

11. Towing mirror running lights not working

    By Justinriek40, September 6, 2020
    • 3 replies
    • 6.5k views
    • 
    • Mikemikemike35
    • April 3

12. Remote lock and unlock problem... 1 2 3

    By Mike Hamm, March 10, 2017   

    • 2016
    • denali
    • (and 8 more)

      Tagged with:

      • 2016
      • denali
      • gmc
      • sierra
      • 2500hd
      • 4x4
      • diesel
      • remote
      • lock
      • unlock
    • 33 replies
    • 52.6k views
    • 
    • slycat453
    • March 28

13. Help with truck wiring for rv

    By whosgregm, March 24
    • 0 replies
    • 308 views
    • 
    • whosgregm
    • March 24

14. 2017 GMC Sierra 3500hd bumpy

    By whosgregm, March 22
    • 1 reply
    • 402 views
    • 
    • CamGTP
    • March 22

15. After new battery, driver's window won't work.

    By Dennis Hoover, March 18
    • 0 replies
    • 352 views
    • 
    • Dennis Hoover
    • March 18

16. Service 4WD and CAL on Gear readout after boosting dead battery on 2015 Sierra

    By ViaSpiga10, March 2
    • 0 replies
    • 418 views
    • 
    • ViaSpiga10
    • March 2

17. 17 Sierra Denali Cab Water Leak. Fixed! Finally!

    By 17DENALIHD16, February 28
    • 0 replies
    • 480 views
    • 
    • 17DENALIHD16
    • February 28

18. Torque specs for replacing Pitman and Idler arms

    By Mike Ross ID, February 23
    • 1 reply
    • 1.9k views
    • 
    • newdude
    • February 24

19. Exhaust sensors

    By Jim nelson, February 14
    • 0 replies
    • 358 views
    • 
    • Jim nelson
    • February 14

20. Starter says engaged with key out of the truck

    By JSD Productions, February 13   

    • starter?
    • 0 replies
    • 497 views
    • 
    • JSD Productions
    • February 13

21. Dash rattle coming from passenger side

    By Washburnvincent, February 12
    • 0 replies
    • 555 views
    • 
    • Washburnvincent
    • February 12

22. 2017 Silverado HD - both high beams not working

    By monty cardano, January 29
    • 3 replies
    • 848 views
    • 
    • newdude
    • February 7

23. Factory Battery life

    By GMCrat, January 17
    • 11 replies
    • 1.3k views
    • 
    • Clear Image Dan
    • January 31

24. Key Fob Programming Issue

    By DenisTheMenace, January 23
    • 0 replies
    • 453 views
    • 
    • DenisTheMenace
    • January 23

25. Charging system 1 2

    By Leone1662, April 12, 2018
    • 23 replies
    • 43.1k views
    • 
    • Killcam727
    • January 13

26. Overcharging or Ground Issue?! Truck going haywire

    By Doctor Cowen, January 8
    • 3 replies
    • 664 views
    • 
    • doverarjim
    • January 9