Operation CHARM: Car repair manuals for everyone.
Home >> Hummer >> 2008 >> H2 V8-6.2L >> Repair and Diagnosis >> Brakes and Traction Control >> Hydraulic System >> Hydraulic Control Assembly - Antilock Brakes >> Service and Repair
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Hydraulic Control Assembly - Antilock Brakes: Service and Repair



Brake Pressure Modulator Valve Replacement

Special Tools

CH-47830 Holding Fixture


Removal Procedure
Caution: Refer to Brake Fluid Irritant Caution (Brake Fluid Irritant Caution) .





1. Remove the brake master cylinder and power brake booster assembly. Refer to Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement) .
2. Install the CH-47830 (1) to the master cylinder assembly.
3. Position the CH-47830 with the master cylinder assembly in a vise.




4. Remove the master cylinder reservoir (1). Refer to Master Cylinder Reservoir Replacement (Master Cylinder Reservoir Replacement) .




5. Remove the power brake booster (1). Refer to Power Brake Booster Replacement (Power Brake Booster Replacement) .




6. Remove the brake pressure modulator valve (BPMV) (1) bolts.




7. Remove the BPMV gasket (1) and the BPMV module assembly (2).
Discard the BPMV gasket.




8. Remove the brake fluid level sensor bracket bolt (1) and bracket (2) from the BPMV module assembly.



Installation Procedure


Notice: Refer to Fastener Notice (Fastener Notice) .





1. Install the brake fluid level sensor bracket bolt (1) and bracket (2) to the BPMV module assembly.

Tighten the bolt to 8 N.m (71 lb in).





2. Install a new BPMV gasket (1) and the BPMV module assembly (2).

Important: Hand install the BPMV module assembly bolts prior to tightening the bolts to properly locate the BPMV module assembly.






3. Install the BPMV (1) bolts.

Tighten the bolts to 32 N.m (24 lb ft).





4. Install the power brake booster (1). Refer to Power Brake Booster Replacement (Power Brake Booster Replacement) .




5. Install the master cylinder reservoir (1). Refer to Master Cylinder Reservoir Replacement (Master Cylinder Reservoir Replacement) .




6. Remove the CH-47830 (1) from the master cylinder assembly.
7. Install the brake master cylinder and power brake booster assembly. Refer to Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement) .
8. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual) (Hydraulic Brake System Bleeding (Manual))Hydraulic Brake System Bleeding (Pressure) (Hydraulic Brake System Bleeding (Pressure)) .
9. Refer to Programming and Relearning (Programming and Relearning) for programming and setup information.


pro multis · About Operation CHARM