What causes hard brakes in Cadillac?
1 Answers
Reasons for hard brakes: mainly due to vacuum booster failure, severely worn brake pads, insufficient brake fluid, or failure of the brake pedal spring. 1. It is relatively normal for the brake pedal to become hard because the brake vacuum assist system relies on the vacuum generated by the engine under normal operating conditions to provide braking assistance. 2. If there is a problem with the vacuum booster pump, it becomes difficult to press the brake without assistance. 3. The vacuum booster pump can only generate vacuum and provide assistance when the engine is running. If the engine is not running, no assistance is generated, but some residual vacuum may remain. After the engine is turned off and the brake is pressed, the assistance is completely gone.