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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1090 (ANTILOCK BRAKE SYSTEM AND TRACTION CONTROL SYSTEM)REPAIR INSTRUCTIONSBRAKE PRESSURE MODULATOR VALVE (BPMV) REPLACEMENTINSTALLATION PROCEDURE

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying BPMV Mounting Bracket Hardware

Courtesy of GENERAL MOTORS CORP.

Install EBCM onto the BPMV (1) if replacing the BPMV only. Refer to Electronic Brake Control Module Replacement .
Install BPMV and EBCM as an assembly to the mounting bracket.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the 2 bolts (1) that connects the BPMV assembly to the mounting bracket (2).
Tighten: Tighten the bolts to 10 N.m (84 lb in).

Fig 2: Locating BPMV Mounting Bracket Nuts

Courtesy of GENERAL MOTORS CORP.

Install the BPMV bracket to the strut tower.
Install the 3 nuts (2) that attach the BPMV mounting bracket to the strut tower.
Tighten:
- Tighten the nuts to 10 N.m (89 lb in).
- Reposition any lines or hoses that were moved out of place.

Fig 3: Master Cylinder Brake Pipes To BPMV

Courtesy of GENERAL MOTORS CORP.

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.