Some of the most sensitive components of your GMC Yukon XL 1500 brake system are the electrical connectors. The connectors send the signals that engage the components of the brake to either lock or release, which enables the automobile to slow down or stop in response to the driver's compression of the brake pedal.
The purpose of a brake system is to prevent unwanted wheel motion. As driving on the road requires a lot of starting, stopping, and slowing down, a malfunction in any of the brake components can produce disastrous results. It could create injury to the driver, other motorists, and severely damage your GMC Yukon XL 1500.