One problem related to brake fluid leak has been reported for the 2005 Buick Lesabre. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Buick Lesabre based on all problems reported for the 2005 Lesabre.
2005 Buick Lesabre with 42,330 miles went into the repair shop to have the brakes replaced. Once the brakes were replaced, the mechanic took the car from the repair bay onto the parking lot to check the integrity of the brakes. The mechanic applied a hard braking when the brake pedal went to the floor. Upon inspection of the brake system, it was found that the brake line which goes across the rear of the car from wheel to wheel had rusted through and caused the brake fluid to leak. This brake line was replaced with a new one from wheel to wheel. The system was then bled and brake fluid replaced. The car was checked again and was found to be drivable.