GM Service Manual Online
For 1990-2009 cars only

Test Description

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

  1. Suspension components that are not operating properly may cause a disturbance to the vehicle during application of the brake system.

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 Diagnosis in Suspension General Diagnosis.

Did you find and correct a condition?

Go to Step 6

Go to Step 3

3

Inspect the hydraulic brake system for proper operation. Refer to Hydraulic Brake System Diagnosis .

Did you find and correct a condition?

Go to Step 6

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 6

Go to Step 5

5

Inspect the brake assist system for proper operation. Refer to Brake Assist System Diagnosis .

Did you find and correct a condition?

Go to Step 6

Go to Diagnostic Starting Point - Hydraulic Brakes

6

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