One problem related to brake sensor has been reported for the 2018 GMC Sierra. The most recently reported issues are listed below.
1-it needs to apply the brake so hard to make it stop at 100 km/hr and above. . 2-there is a jerk on down '2nd to 1st "and up shifting 1st to 2nd gear. 3-front parking sensors sensitivities is not accurate .
| Service Brakes problems | |
| Brake Sensor problems | |
| Brakes Failed problems |