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 for correct brake pedal travel. Refer to Brake Pedal Travel Measurement and Inspection .

Is the brake pedal travel distance within the acceptable limits?

Go to Step 5

Go to Step 3

3

  1. Inspect for worn, missing, misaligned, bent or damaged brake pedal system components.
  2. • For the brake pedal pushrod component inspection, refer to Brake Pedal Pushrod Inspection .
    • Inspect the brake pedal bushings for greater than desired wear and/or damage and inspect the brake pedal for a misaligned, bent, and/or damaged condition.
  3. Replace the brake pedal system components that are worn, missing, misaligned, bent or damaged. Refer to the following procedures as necessary.

Did you find and replace any worn, missing, misaligned, bent or damaged brake pedal system components?

Go to Step 4

Go to Step 5

4

Inspect for correct brake pedal travel. Refer to Brake Pedal Travel Measurement and Inspection .

Is the brake pedal travel distance within the acceptable limits?

Go to Step 8

Go to Step 5

5

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

Did you find and correct a condition?

Go to Step 8

Go to Step 6

6

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

Did you find and correct a condition?

Go to Step 8

Go to Step 7

7

Inspect the brake assist system for correct operation. Refer to Symptoms - Hydraulic Brakes .

Did you find and correct a condition?

Go to Step 8

Go to Diagnostic Starting Point - Hydraulic Brakes

8

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