Were you sent here from the Hydraulic Brake Symptom table?

Go to Step 2

Go to Diagnostic Starting Point - Hydraulic Brakes

Inspect the brake pedal position sensor for correct adjustment to make sure that the brake pedal is fully releasing. Refer to Brake Pedal Travel Measurement and Inspection

Did you find and correct a condition?

Go to Step 10

Go to Step 3

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

Did you find and correct a condition?

Go to Step 10

Go to Step 4

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

Did you find and correct a condition?

Go to Step 10

Go to Step 5

1. Separate the vacuum brake booster pushrod from the brake pedal. Refer to Brake Pedal Assembly Replacement in Hydraulic Brakes.
2. Inspect each brake assembly to determine if the brake drag condition is still present.

Do any brake assemblies still exhibit the brake drag condition?

Go to Step 7

Go to Step 6

Replace the brake pedal assembly. Refer to Brake Pedal Assembly Replacement .

Did you complete the replacement?

Go to Step 10

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1. Separate the master cylinder from the vacuum brake booster. DO NOT disconnect any brake pipes. Refer to Master Cylinder Replacement .
2. Inspect the brake assemblies to determine if the brake drag condition is still present.

Do any brake assemblies still exhibit the brake drag condition?

Go to Step 10

Go to Step 8

Replace the vacuum brake booster. Refer to Power Vacuum Brake Booster Replacement .

Did you complete the replacement?

Go to Step 10

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

Did you find and correct a condition?

Go to Step 10

Go to Diagnostic Starting Point - Hydraulic Brakes

1. Install or connect components that were removed or disconnected during diagnosis.
2. Road test the vehicle to confirm correct operation. Refer to Brake System Vehicle Road Test .

Is the condition still present?

Go to Step 2

System OK