The brake master cylinder is the first component in a vehicle’s braking system, activated by depressing the brake pedal. The pedal pushes a piston through this cylinder, forcing brake fluid ...

Chevy Trax units will need a master brake cylinder replacement to correct reduced brake performance, according to a recent GM service update.

An issue with the braking system might cause fluid to leak from the master cylinder front wheel circuit to the brake booster. If this happens, the vehicle may become more difficult to stop.

According to the recall report Ford submitted on April 11, 2025, to the National Highway Traffic Safety Administration (NHTSA), the brake fluid can leak from the master cylinder's front wheel ...

A defective master cylinder may lead to a “substantial loss of brake fluid” which can result in reduced braking performance of the front wheels, according to the NHTSA. The NHTSA notified Ford ...