Body control modular?

2003 CHEVROLET TAHOE
300,000 MILES • 5.3L • V8 • 2WD • AUTOMATIC
Avatar
CRYSTALALFORD87
  • MEMBER
  • 1 POST
Trouble starting windows going down on its own, no sound on stereo, horn blows on its own, check engine light on and service brake system light on.
Jul 1, 2023 at 12:40 PM
Advertisement
Avatar
STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
While that could be a body control module failure, the first thing to do would be to get a dealer level scan tool and read any codes stored in the system as well as the freeze frame data and see if there are any clues to the problem in that information. Then determine a course of action.

https://www.2carpros.com/articles/can-scan-controller-area-network-easy
Jul 1, 2023 at 7:16 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.