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How to Install Brake Control on a Trailblazer

The Electronic Brake Control Module, or EBCM, on a Chevrolet Trailblazer controls the vehicles braking during an emergency stop by preventing the wheels from locking. The procedure for installing an EBCM is generally the same for all Trailblazers, and requires a scan tool to program the EBCM.

Instructions

1

Disconnect the negative battery cable with a socket wrench.

2

Clean the EBCM and surrounding area with a cloth to avoid contaminating the EBCM. The EBCM on a Trailblazer is under the vehicle on the drivers side next to the drive shaft. It is on top of the block that is connected to the brake lines.

3

Unplug the electrical connector from the EBCM, and remove the mounting screws for with a T-25 Torx tool. Detach the EBCM from the Brake Pressure Modulator Valve, or BPMV. Discard the mounting screws for the EBCM.

4

Wipe the BPMV clean with a shop cloth. Fasten the new EBCM to the BPMV with new mounting screws by using the T-25 Torx tool. Tighten the mounting screws in an X-pattern to 39 inch-pounds.

5

Connect the electrical wiring harness for the EBCM. Reconnect the negative battery cable with a socket wrench.

6

Take the vehicle to a dealer to program the EBCM. This generally involves connecting a scan tool to the vehicle and performing the tire size calibration function.