GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you perform the Brake System Diagnosis?

Go to Step 2

Go to Diagnostic System Check - Hydraulic Brakes

2

Check the tires for incorrect pressure.

Is the tire pressure incorrect?

Go to Step 3

Go to Step 4

3

Adjust the tires to the correct pressure. Refer to Tire Inflation Pressure Specifications in Maintenance and Lubrication.

Did you complete the repair?

Go to Step 20

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4

Inspect the front suspension for loose components.

Are there loose components?

Go to Step 5

Go to Step 6

5

Repair or replace the components as necessary.

Did you complete the repair?

Go to Step 20

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6

Inspect the brake linings for the following:

Refer to Brake Pad Inspection in Disc Brakes.

    • Excessive wear
    • Uneven wear
    • Abuse
    • Glazing
    • Contaminated lining material
    • Incorrect lining material

Do any of the above conditions exist?

Go to Step 7

Go to Step 8

7

Replace the brake linings as necessary. Refer to the appropriate procedure in Disc Brakes:

Did you complete the repair?

Go to Step 20

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8

Inspect the brake rotor for the following:

    • Hot spots
    • Scored rotor surface
    • Grooved rotor surface

Do any of the above conditions exist?

Go to Step 9

Go to Step 10

9

Resurface or replace the brake rotor as necessary. Refer to the appropriate procedure in Disc Brakes

Did you complete the repair?

Go to Step 20

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10

Inspect the brake assembly for loose, broken or missing components.

Are there any loose, broken or missing brake assembly components?

Go to Step 11

Go to Step 12

11

Repair or replace the components as necessary. Refer to the appropriate procedure in Disc Brakes:

Did you complete the repair?

Go to Step 20

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12

Inspect the following brake caliper assembly components for corrosion:

    • Mounting bolts
    • Sleeves
    • Steering knuckle
    • Brake caliper
    • Brake caliper piston

Are any of the above components corroded or sticking?

Go to Step 13

Go to Step 14

13

Repair or replace the brake calipers. Refer to the appropriate repair procedures in Disc Brakes:

Did you complete the repair?

Go to Step 20

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14

Inspect the park brake for improper adjustment.

Is the park brake adjusted improperly?

Go to Step 15

Go to Step 16

15

Adjust or replace the park brake cable. Refer to the appropriate procedure in Park Brake:

Did you complete the repair?

Go to Step 20

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16

Inspect the front suspension for incorrect alignment. Refer to Wheel Alignment Specifications in Wheel Alignment.

Is the wheel alignment incorrect?

Go to Step 17

Go to Step 18

17

Correct the front wheel alignment. Refer to the appropriate procedure in Wheel Alignment:

    •  Front Toe Adjustment

Did you complete the repair?

Go to Step 20

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18

Inspect for contaminated or improper brake fluid.

Is the brake fluid contaminated or improper?

Go to Step 19

Go to Diagnostic System Check - Hydraulic Brakes

19

Replace all of the hydraulic brake system rubber components.

  1. Flush the hydraulic brake system. Refer to Hydraulic Brake System Flushing .
  2. Replace all of the hydraulic brake system rubber components. Refer to the appropriate procedures:
  3. •  Brake Pressure Modulator Valve Replacement in Antilock Brake System
  4. Flush the hydraulic brake system. Refer to Hydraulic Brake System Flushing .
  5. Bleed the brake system. Refer to Hydraulic Brake System Bleeding .

Did you complete the repair?

Go to Step 20

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20

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2