Need the BCM pinout and connector description/color

2002 CHEVROLET TRAILBLAZER
250,000 MILES • 4.2L • 6 CYL • 2WD • AUTOMATIC
Avatar
HARPSTER
  • MEMBER
  • 4 POSTS
I have a high beam malfunction, and I have found a broken wire on the BCM harness. I need the BCM pinout and connector description/color reference to trace it down.
Image (Click to enlarge)
Attached Media
Jan 7, 2020 at 4:03 AM
Advertisement
Avatar
CARADIODOC
  • ✓Experienced Mechanic
  • 34,366 POSTS
See how far you get with these.

The second and third diagrams are blown-up versions of the first one so they're easier to read. The fifth and sixth diagrams are the fourth one cut in half and blown up.
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Jan 7, 2020 at 4:51 AM
Avatar
HARPSTER
  • MEMBER
  • 4 POSTS
Thank you CARADIODOC! That's a huge help!
Jan 7, 2020 at 6:00 AM
Avatar
HARPSTER
  • MEMBER
  • 4 POSTS
Problem fixed! It was the broken wire!
Jan 8, 2020 at 3:53 AM
Avatar
CARADIODOC
  • ✓Experienced Mechanic
  • 34,366 POSTS
Dandy. Happy to hear you solved it. Please come back to see us again.
Jan 8, 2020 at 5:27 AM
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.