Operation CHARM: Car repair manuals for everyone.
Home >> Chevrolet >> 2007 >> TrailBlazer 4WD L6-4.2L >> Repair and Diagnosis >> Starting and Charging >> Battery >> Battery Control Module >> Service and Repair
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Battery Control Module: Service and Repair



Generator Battery Control Module Replacement

Removal Procedure




1. Remove the negative battery cable.
2. Mark the location of the negative battery cable clips and remove the clips from the cable.
3. Remove the tape securing the generator battery current sensor to the negative battery cable.
4. Squeeze the negative battery cable branches together.

Important: Note the orientation of the generator battery current sensor prior to removal.

5. Slide the generator battery current sensor (1) off of the negative battery cable.

Installation Procedure




1. Squeeze the negative battery cable together.

Important: Ensure the generator battery current sensor is installed in the correct direction and location on the negative battery cable.

2. Slide the NEW generator battery current sensor (1) up onto the negative battery cable and insert the tab under the negative battery cable terminal cover.
3. Wrap electrical tape around the generator battery current sensor leg in order to secure the sensor to the negative battery cable.
4. Install the negative battery cable clips to the cable to the locations previously marked during removal.
5. Install the negative battery cable.

pro multis · About Operation CHARM