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Home >> Chevrolet >> 2002 >> Astro Van Passenger, AWD >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> General Hydraulic Brake System >> Diagnostic Information & Procedures >> Brake Pulsation >> Test Description

Test Description

The numbers below refers 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.
Brake Pulsation Diagnosis

Step Action Yes No
1 Were you sent here from the Hydraulic Brake Symptom Table? Go to Step 2  Go to Diagnostic Starting Point - Hydraulic Brakes 
2 Inspect the suspension system for proper operation. Refer to DIAGNOSTIC STARTING POINT - SUSPENSION GENERAL . Did you find and correct a condition? Go to Step 7  Go to Step 3 
3 Inspect the anti-lock brake system for proper operation. Refer to DIAGNOSTIC STARTING POINT - ANTI-LOCK BRAKE S . Did you find and correct a condition? Go to Step 7  Go to Step 4 
4 Inspect the disc brake system for proper operation. Refer to Disc Brake System Diagnosis . Did you find and correct a condition? Go to Step 7  Go to Step 5 
5 Inspect the drum brake system for proper operation. Refer to Drum Brake System Diagnosis . Did you find and correct a condition? Go to Step 7  Go to Step 6 
6 Inspect the hydraulic brake system for proper operation. Refer to Hydraulic Brake System Diagnosis . Did you find and correct a condition? Go to Step 7  Go to Diagnostic Starting Point - Hydraulic Brakes 
7 Road test the vehicle in order to confirm proper operation. Refer to Brake System Vehicle Road Test . Is the condition still present? Go to Step 2  System OK