Test Description

The numbers below refer to the step numbers on the diagnostic table:

1. 2)  - Suspension components that are not operating properly may cause a disturbance to the vehicle during application of the brake system.
2. 3)  - Anti-Lock brake system operation could produce feedback through the brake pedal during application of the brake system.
Fig 1: Brake Pulsation Diagnosis
Courtesy of GENERAL MOTORS CORP.