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Home >> Chevrolet >> 2007 >> Express 2500 V8-6.0L >> Repair and Diagnosis >> Brakes and Traction Control >> Hydraulic System >> Brake Proportioning/Combination Valve >> Service and Repair
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Brake Proportioning/Combination Valve: Service and Repair



Combination Valve Replacement

Removal Procedure




1. Raise the vehicle and properly support it with safety stands. Refer to Vehicle Lifting.
2. Disconnect the electrical connector from the combination valve.
3. Disconnect the front and rear brake pipes from the combination valve.
4. Remove the bolt holding the combination valve to the frame.
5. Remove the combination valve.

Installation Procedure




1. Install the combination valve to the frame.

Notice: Refer to Fastener Notice.

2. Install the bolt to the combination valve and the frame.

Tighten the bolt to 10 N.m (88 lb in).

3. Connect the front and rear brake pipes to the combination valve.

Tighten the brake pipe fittings to the combination valve to 30 N.m (22 lb ft).

4. Connect the electrical connector to the combination valve.
5. Bleed the brake hydraulic system.

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