Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - BRAKES AND TRACTION CONTROLELECTRONIC BRAKE CONTROL MODULESERVICE AND REPAIR
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Electronic Brake Control Module: Service and Repair
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Service and Repair
REMOVAL PROCEDURE
IMPORTANT: After installation, calibrate the new EBCM to the tire size that is appropriate to the vehicle. Refer to Tire Size Calibration and to Trim Level Calibration portions of ABS System Description.
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
1. Negative Battery Cable.
2. Raise the vehicle.
3. Remove two 13 mm weld/stud nuts fastening the shield and the BPMV to the EHCU mounting bracket.
4. Disconnect three electrical connectors from the EBCM.
5. Remove the four T-25 Torx(R) screws (1) that fasten the EBCM (2) to the BPMV (3).
IMPORTANT: Do not use a tool to pry the EBCM or the BPMV. Excessive force will damage the EBCM.
6. Fully remove the EBCM from the BPMV (3).
INSTALLATION PROCEDURE
IMPORTANT: Do not use RTV or any other type of sealant on the EBCM gasket or mating surfaces.
1. Install EBCM (2) on to the BPMV (3).
NOTICE: Refer to Fastener Notice in Service Precautions.
IMPORTANT: Do not reuse the old mounting screws. Always install new mounting screws with the new EBCM.
2. Install the four new T-25 Torx(R) screws (1) in the EBCM (2).
^ Tighten the four T-25 Torx(R) screws to 5 Nm (39 inch lbs.) in an X-pattern.
3. Connect three electrical connectors to the EBCM.
4. Install two 13 mm weld/stud nuts fastening the shield and the BPMV (3) to the EHCU mounting bracket (6).
^ Tighten two 13 mm weld/stud nuts to 25 Nm (18 ft. lbs.).
5. Lower the vehicle.
6. Connect the negative battery cable.
7. Revise the tire calibration using the Scan Tool. Refer to Scan Tool Diagnostics.
8. Go to ABS Diagnostic System Check.
IMPORTANT: After installation, calibrate the new EBCM to the tire size that is appropriate to the vehicle. Refer to Tire Size Calibration and to Trim Level Calibration portions of ABS System Description.
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
1. Negative Battery Cable.
2. Raise the vehicle.
3. Remove two 13 mm weld/stud nuts fastening the shield and the BPMV to the EHCU mounting bracket.
4. Disconnect three electrical connectors from the EBCM.
5. Remove the four T-25 Torx(R) screws (1) that fasten the EBCM (2) to the BPMV (3).
IMPORTANT: Do not use a tool to pry the EBCM or the BPMV. Excessive force will damage the EBCM.
6. Fully remove the EBCM from the BPMV (3).
INSTALLATION PROCEDURE
IMPORTANT: Do not use RTV or any other type of sealant on the EBCM gasket or mating surfaces.
1. Install EBCM (2) on to the BPMV (3).
NOTICE: Refer to Fastener Notice in Service Precautions.
IMPORTANT: Do not reuse the old mounting screws. Always install new mounting screws with the new EBCM.
2. Install the four new T-25 Torx(R) screws (1) in the EBCM (2).
^ Tighten the four T-25 Torx(R) screws to 5 Nm (39 inch lbs.) in an X-pattern.
3. Connect three electrical connectors to the EBCM.
4. Install two 13 mm weld/stud nuts fastening the shield and the BPMV (3) to the EHCU mounting bracket (6).
^ Tighten two 13 mm weld/stud nuts to 25 Nm (18 ft. lbs.).
5. Lower the vehicle.
6. Connect the negative battery cable.
7. Revise the tire calibration using the Scan Tool. Refer to Scan Tool Diagnostics.
8. Go to ABS Diagnostic System Check.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.