Possible Body Control Module issue

2004 CHEVROLET TRAILBLAZER
133,000 MILES • 4.2L • V6 • 4WD • AUTOMATIC
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BLESS2SUCCESS
  • MEMBER
  • 45 POSTS
My vehicle starts and runs up but the only thing that is not working are the rear lights while driving, power windows, power locks, mirrors, radio, A/C, dome lights, cigarette lighter and other stuff.

Does anyone know what this issue could be?
Feb 6, 2019 at 8:59 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

I assume you mean all that stuff does not work while it is running.

Yes, it could be but it needs to be confirmed. You will need an advanced scan tool to monitor the BCM and see if there are any codes in the system.

A code reader will not read the body control module. You will need a real scan tool to verify.

Roy
Feb 7, 2019 at 6:58 PM
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