gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Hydraulic Control Assembly - Antilock Brakes > < Brake Proportioning/Combination Valve|Service and Repair
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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. 

Hydraulic Control Assembly - Antilock Brakes > < Brake Proportioning/Combination Valve|Service and Repair