gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Brake Master Cylinder|Service and Repair > < Brake Master Cylinder Cover - Leakage|Page 4522
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Pedal Reserve Checks

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The pedal should be firm and not leak down.

Prior to replacing a master-cylinder for poor pedal travel or feel verify the following:
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There were no problems with any of the related systems.

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The entire brake system has been bled.

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Rear brakes are properly adjusted.

Brake Master Cylinder|Service and Repair > < Brake Master Cylinder Cover - Leakage|Page 4522