gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Anti-Lock Pressure Valve|Page 6028 > < Brake Proportioning/Combination Valve|Description and Operation|Page 6023
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Hydraulic Assembly: Service and Repair
Anti-Lock Pressure Valve

Fig. 85 EBCM & APV Valve Assembly Replacement.

The APV valve is not serviceable. It should be replaced when the DTC code charts show that it's the cause of a malfunction.

1. Disconnect battery ground cable.
2. Disconnect brake pipe fittings from APV.
3. Remove APV to bracket attaching bolts.
4. Disconnect APV valve electrical connector, Fig. 85.
5. Remove APV valve from vehicle.
6. Reverse procedure to install, torque APV to bracket attaching bolts to 21 ft. lbs.

Anti-Lock Pressure Valve|Page 6028 > < Brake Proportioning/Combination Valve|Description and Operation|Page 6023