Brakes problem
1995 Buick Skylark 6 cyl Front Wheel Drive Automatic 96450 miles
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As soon as you just barely touch the brake pedal both rear wheels lock up. Pulled both rear wheeels and inspected entire rear wheel brake assembly. Drums, shoes, springs and adjusters all perfect shape. No apparent mechanical reason. ABS light is not on,
disconnected electrical connectors to Master with no change in operation. Wheels are free until brake pedal is depressed slightes amount. Any ideas ?