GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Brake System Diagnosis?

--

Go to Step 2

Go to Brake System Diagnosis

2

Is the operator riding the brake pedal?

--

Advise the customer of proper braking procedures

Go to Step 3

3

Inspect the brake pedal assembly for the following:

    • Bent or misaligned components
    • Binding or interference between the pedal and the booster input rod
    • Interference with other components

Do any of the above conditions exist?

--

Go to Step 4

Go to Step 5

4

Repair or replace the cause of the misalignment, interference or binding.

Did you complete the repair?

--

Go to Step 19

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5

Inspect the brake linings for the following:

    • Excessive wear
    • Uneven wear

Refer to Brake Pad Inspection in Disc Brakes.

Do any of the above conditions exist?

--

Go to Step 6

Go to Step 7

6

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

Did you complete the repair?

--

Go to Step 19

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7

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

Are there any loose or missing attachments?

--

Go to Step 8

Go to Step 9

8

Repair or replace the components as necessary.

Did you complete the repair?

--

Go to Step 19

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9

Inspect for an improperly adjusted park brake. Refer to Park Brake Cable Service/Adjustment in Park Brake.

Is the park brake improperly adjusted?

--

Go to Step 10

Go to Step 11

10

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

Did you complete the repair?

--

Go to Step 19

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11

Inspect the front suspension for loose or missing attachments.

Are there any loose or missing components?

--

Go to Step 12

Go to Step 13

12

Repair or replace the components as necessary.

Did you complete the repair?

--

Go to Step 19

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13

Inspect the disc brake caliper for the following:

    • Sticking caliper pistons
    • Corroded mounting bolts

Do any of the above conditions exist?

--

Go to Step 14

Go to Step 15

14

  1. Replace the sticking or corroded components.
  2. Repair or replace the brake calipers. Refer to the appropriate procedures in Disc Brakes:

Did you complete the repair?

--

Go to Step 19

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15

Inspect the brake fluid for contamination.

Is the brake fluid contaminated?

--

Go to Step 16

Go to Step 17

16

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 19

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17

Inspect the brake pipes and brake hoses for the following conditions:

    • Low fluid or no fluid output
    • Particles suspended in the fluid

Refer to Hydraulic Brake System Flushing .

Do any of the above conditions exist?

--

Go to Step 18

Go to Brake System Diagnosis

18

  1. Determine the area of restriction. This will involve the disassembly of individual brake lines and checking for low or no fluid output. Flush the individual brake line or hose. Refer to Hydraulic Brake System Flushing .
  2. If the restriction cannot be removed, replace the applicable brake hose or the brake pipe.

Did you complete the repair?

--

Go to Step 19

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19

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2