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 584 (ANTI-LOCK BRAKE 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 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- Install EBCM onto the BPMV (1) if replacing the BPMV only. Refer to Electronic Brake Control Module (EBCM) Replacement .
- Install BPMV and EBCM as an assembly (1) to the mounting bracket (2).
- Install the 4 bolts (3) that connects the BPMV assembly (1) to the mounting bracket (2).
Tighten:
Tighten the 4 bolts (3) that connect the BPMV (1) to the mounting bracket (2) to 10 N.m (89 in lbs)
- Install the BPMV bracket (4) to the strut tower.
- Install the 1 bolt and 3 nuts that attach the BPMV mounting bracket (4) to the strut tower.
Tighten:
- Tighten the lower 2 BPMV mounting bracket nuts (3) and bolt to 10 N.m (89 in lbs).
- Tighten the top nut (1) for BPMV mounting bracket (4) to strut tower to 3 N.m (27 in lbs).
CAUTION: Make sure brake pipes are correctly connected to brake pressure modulator valve. If brake pipes are switched by mistake, wheel lockup will occur and personal injury may result. The only two ways this condition can be detected are by using a Scan Tool or by doing an Anti-lock stop.
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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.