Operating on the rear access road to a mall and noticed brake pedal almost went to the floor and it took a strong effort to stop the vehicle. Tried pumping brakes to see if pedal would rise, it did not. Checked brake fluid reservoir and it was slightly down. Looked under truck and no leak at all four wheels or on inside master cylinder cowl. Drove slowly to nearby mechanic and this time noticed dripping under driver side floor. Mechanic said I needed brake line replacement and am awaiting repair. Vehicle is well maintained, always parked on paved driveway, and waxed along with undercarraige car washes during the winter months. Purchased used from Chevy dealer and found left rear backing plate had almost rotted off exposing rear axle seals which dealer replaced within week of my purchase.

- Port Ewen, NY, USA