Ask A GM Technician

16,055 topics in this forum

1. 2008 Sierra turn signal issue HELP!

   By JGW, March 28, 2020   

   • turn signnal
   • short
   • 7 replies
   • 11.8k views
   • 
   • Michael Jones 79364
   • March 13

2. Side view mirrors have a mind of their own

   By Yoda3, March 6
   • 0 replies
   • 249 views
   • 
   • Yoda3
   • March 6

3. 2019 Silverado 1500 5.3L Anyone know what this sound is?

   By dlenk5698, February 16
   • 5 replies
   • 507 views
   • 
   • GMCustomerService
   • March 5

4. Airbag light on

   By airbag light, February 13
   • 3 replies
   • 351 views
   • 
   • GMCustomerService
   • March 5

5. 2005 Silverado 5.3 fans not coming on when they are supposed to

   By Austinbk1, March 3
   • 0 replies
   • 260 views
   • 
   • Austinbk1
   • March 3

6. 2025 Tahoe UVM Questions about wiring and setup.

   By toastpirate, February 27
   • 0 replies
   • 304 views
   • 
   • toastpirate
   • February 27

7. Programming a new key fob

   By drewand11, February 19
   • 10 replies
   • 1.5k views
   • 
   • newdude
   • February 21

8. Electrical Issues

   By k4ben, February 13
   • 2 replies
   • 272 views
   • 
   • k4ben
   • February 18

9. C0110-00 2007 Chevy 1500

   By Xman05, February 9
   • 2 replies
   • 256 views
   • 
   • Jsdirt
   • February 15

10. 2012 Yukon XL Denali 172000 miles 6.2L. Owned for 10yrs and no problems until early last year

    By testdepth, February 15
    • 1 reply
    • 280 views
    • 
    • Jsdirt
    • February 15

11. Replacing factory original spark plugs

    By MaverickZ71, February 10
    • 2 replies
    • 518 views
    • 
    • Jsdirt
    • February 11

12. High Resistance in battery Cables

    By djlightning, December 6, 2025
    • 3 replies
    • 548 views
    • 
    • carkhz316
    • February 5

13. 03 2500hd 6.0 misfire issue

    By ShiftyEskimo, January 15
    • 3 replies
    • 252 views
    • 
    • Jsdirt
    • February 4

14. 2011 5.3 hesitates on start-up

    By LaserBlueZ71, January 28, 2015
    • 6 replies
    • 9.1k views
    • 
    • Mttruck
    • February 4

15. 2003 Chevy Silverado odometer lit up when turned off

    By omar548, January 12
    • 1 reply
    • 227 views
    • 
    • Jsdirt
    • February 3

16. OIL presure on 2024 colorado ?

    By Custom Curious, December 26, 2025
    • 0 replies
    • 219 views
    • 
    • Custom Curious
    • December 26, 2025

17. 2004 Escalade Brake Light Switch Issue

    By Chris Stutes, December 23, 2025
    • 0 replies
    • 149 views
    • 
    • Chris Stutes
    • December 23, 2025

18. 2001 Gmc Yukon 2500, multiple issues (possibly related)

    By Kaptain America, December 9, 2025
    • 0 replies
    • 170 views
    • 
    • Kaptain America
    • December 9, 2025

19. Way to check what maintenance has been done on a used vehicle 1 2

    By Badbird2000, November 3, 2025
    • 16 replies
    • 2.8k views
    • 
    • Jsdirt
    • November 6, 2025

20. ISO on C2 pin 19 information for a 2001 Chevy Silverado 1500 4x4 1 2

    By Roadstar01, January 2, 2025   

    • pcm wiring
    • 4x4 actuator, transfer case
    • (and 1 more)

      Tagged with:

      • pcm wiring
      • 4x4 actuator, transfer case
      • tccm
    • 16 replies
    • 4.8k views
    • 
    • Roadstar01
    • October 27, 2025

21. 2001 GMC Sierra 1500 5.3L Secondary Air Monitor

    By Aussiehomie, June 9, 2025
    • 7 replies
    • 1.5k views
    • 
    • Jsdirt
    • June 12, 2025

22. A/C leak

    By Joseph23, June 6, 2025
    • 8 replies
    • 1.2k views
    • 
    • Jsdirt
    • June 10, 2025

23. Park assist no light 2020 Silverado.

    By CDog77, May 31, 2025
    • 1 reply
    • 590 views
    • 
    • newdude
    • May 31, 2025

24. Flar towing

    By Glenn Dausch1, May 24, 2025
    • 3 replies
    • 580 views
    • 
    • Jsdirt
    • May 27, 2025

25. 2004 Suburban blows 10a A/C fuse under hood

    By Virginia Veg., July 16, 2016
    • 9 replies
    • 12.1k views
    • 
    • clint45
    • May 26, 2025