GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Brake System Diagnosis?

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Go to Step 2

Go to Brake System Diagnosis

2

Inspect the disc brake rotors for the following:

    • Hot spots
    • Scored rotor surface
    • Grooved rotor surface

Refer to Brake Rotor Lateral Runout Check in Disc Brakes.

Do any of the above conditions exist?

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Go to Step 3

Go to Step 4

3

Resurface or replace the brake rotor as necessary.

    • Refer to Brake Rotor Refinishing in Disc Brakes.
    • Refer to Brake Rotor Replacement in Disc Brakes.

Did you complete the repair?

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Go to Step 20

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4

Inspect the following brake caliper assembly components for corrosion:

    • Mounting bolts
    • Sleeves
    • Brake caliper bracket
    • Brake caliper
    • Brake caliper piston

Refer to Brake Caliper Inspection in Disc Brakes.

Are any of the above components corroded or sticking?

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Go to Step 5

Go to Step 6

5

Repair or replace the brake calipers. Refer to the appropriate procedure in Disc Brakes.

Did you complete the repair?

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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?

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Go to Step 7

Go to Step 8

7

Replace the brake linings as necessary. Refer to Brake Pads Replacement in Disc Brakes.

Did you complete the repair?

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Go to Step 20

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8

Inspect the brake assembly for loose, missing or broken components. Refer to Brake Pad Inspection in Disc Brakes.

Are there missing or loose brake assembly components?

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Go to Step 9

Go to Step 10

9

Repair or replace the components as necessary.

Did you complete the repair?

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Go to Step 20

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10

Inspect the hydraulic brake system for leaks. Refer to Brake Fluid Leak .

Are there brake fluid leaks?

--

Go to Step 11

Go to Step 12

11

Repair or replace the brake hose, pipe, caliper or master cylinder as necessary.

Did you complete the repair?

--

Go to Step 20

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12

Inspect the park brake for improper adjustment.

Is the park brake improperly adjusted?

--

Go to Step 13

Go to Step 14

13

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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14

Inspect for an internal leak within the master cylinder. Refer to Master Cylinder Diagnosis .

Is there an internal leak within the master cylinder?

--

Go to Step 15

Go to Step 16

15

Repair or replace the master cylinder. Refer to the appropriate procedure.

    •  Master Cylinder Overhaul .

Did you complete the repair?

--

Go to Step 20

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16

Inspect for contaminated or improper brake fluid.

Is the brake fluid contaminated or improper?

--

Go to Step 17

Go to Step 18

17

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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18

Inspect for air in the brake system. Refer to Hydraulic Brake System Bleeding .

Is there air in the brake system?

--

Go to Step 19

Go to Brake System Diagnosis

19

Bleed the brake system. Refer to Hydraulic Brake System Bleeding .

Did you complete the repair?

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Go to Step 20

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20

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 2