GM Service Manual Online
For 1990-2009 cars only

Park Brake Will Not Hold or Release Disc

Step

Action

Yes

No

1

Were you sent here from the Park Brake Symptom table?

Go to Step 2

Go to Diagnostic Starting Point - Park Brake

2

Inspect the disc brake system for proper operation. Refer to Disc Brake System Diagnosis .

Did you find and correct a condition?

Go to Step 5

Go to Step 3

3

Inspect the park brake system for proper operation. Refer to Park Brake System Diagnosis .

Did you find and correct a condition?

Go to Step 5

Go to Step 4

4

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

Did you find and correct a condition?

Go to Step 5

Go to Diagnostic Starting Point - Park Brake

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