One problem related to brake foundation components has been reported for the 1998 GMC Sierra 1500. The most recently reported issues are listed below.
When applying the brakes in emergency stopping it appears as if the pressure applied is insufficient and the pedal nearly goes to the floor, cause unknown.
| Brake Electric Antilock problems | |
| Brake Hoses, Lines/piping, And Fittings problems | |
| Service Brakes problems | |
| Brake Abs Warning Light problems | |
| Brake Sensor problems | |
| Brake Foundation Components problems |