Brakes
If the hydraulic boost assist is disabled, slowing or stopping the vehicle will require additional brake pedal effort and a lengthened stopping distance. Both of these effects increase the risk of a crash.
Power assist to the braking system may be lost due to a problem with the vacuum assist, disabling the hydraulic boost assist. If this were to occur increased brake pedal effort would be required to slow and stop the vehicle, increasing the risk of a crash. Dealers will update the software in the electronic brake control module to correct this concern. Affected vehicles are equipped with a 2.5L engine with the auto stop/start option.
General Motors will notifying owners of affected vehicles beginning May 30, 2014. If you don't receive notification and believe you should have, please contact your General Motors dealer for further instruction. They may ask for your vehicle identification number (VIN), so please have it handy when you call. The General Motors recall number is 14201.