GM Service Manual Online
For 1990-2009 cars only

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 hydraulic brake booster to power steering reservoir return hose for kinks and/or other restrictions. Replace the return hose if restrictions are present.

Did you find and correct a condition?

Go to Step 5

Go to Step 3

3

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

Did you find and correct a condition?

Go to Step 5

Go to Step 4

4

Inspect the steering system for proper operation. Refer to Diagnostic Starting Point - Power Steering System .

Did you find and correct a condition?

Go to Step 5

Go to Diagnostic Starting Point - Hydraulic Brakes

5

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