How to Replace the EBCM in an S10


The Chevrolet S-10 is a compact pickup that General Motors manufactured from 1982 to 2004. An anti-lock braking system, or ABS, has been a standard feature of of the S-10 since 1989. The ABS in an S-10 requires an electronic brake control module, or EBCM, to calculate the amount of braking force to apply during an emergency stop. The EBCM applies less braking force to a wheel that is moving more slowly than the others, improving the vehicle's braking ability when a wheel loses traction.

Things You'll Need

  • Socket wrench set
  • Clean cloth
  • T-25 Torx tool
  • Torque wrench
  • Scan tool
  • Remove the cable on the battery's negative terminal with a socket wrench. This reduces the possibility of an electrical discharge damaging the EBCM when you replace it.

  • Wash the area around the EBCM with water and a clean shop cloth to prevent contamination of the EBCM. The EBCM is a flat rectangular box under the vehicle near the driver's side door. It sits atop the brake pressure modulator valve, or BPMV, which has the brake lines connected to it.

  • Detach the electrical connectors from the EBCM. Remove the T-25 Torx mounting screws from the EBCM with a T-25 Torx tool. Detach the EBCM from the BPMV by pulling the EBCM gently.

  • Clean the mounting surface of the BPMV with a clean cloth. Place the new EBCM on to the BPMV, and fasten new T-25 Torx screws to the EBCM. Tighten the screws to 39 inch-pounds with a T-25 Torx tool.

  • Attach the electrical connector to the EBCM. Connect the cable to the battery's negative terminal with a socket wrench.

  • Connect a scan tool to the data link connector in the instrument panel to the left of the steering wheel. Perform the tire size calibration function to program the new EBCM. A qualified mechanic typically performs this step.

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