GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2009 🢒 G5 🢒 Brakes 🢒 Hydraulic Brakes 🢒 Braking Action Uneven - Pulls to One Side

Test Description

The numbers below refer to the step numbers on the diagnostic table:

  1. Suspension components that are not operating properly may cause a disturbance to the vehicle during application of the brake system.

    2.

  2. Steering components that are not operating properly may cause a disturbance to the vehicle during application of the brake system.

Step

Action

Yes

No

DEFINITION: Vehicle pulls to one side only when braking.

1

Were you sent here from the Hydraulic Brake Symptom table?

Go to Step 2

Go to Diagnostic Starting Point - Hydraulic Brakes

2
  1. Inspect the hydraulic brake system for the following conditions.
    2. • Kinked, pinched or damaged brake pipe or flexible brake hose
    • Sticking or improperly operating caliper piston
    • Sticking or improperly operating wheel cylinder pistons, if equipped
    • Brake fluid leak
  2. Adjust, repair or replace components as necessary. Refer to Hydraulic Brake System Diagnosis.

Did you find and correct a condition?

Go to Step 7

Go to Step 3

3
  1. Inspect the disc brake system for the following conditions.
    2. • Contaminated linings
    • Glazed linings
    • Distorted, cracked or damaged linings on one side
    • Loose, damaged or missing caliper hardware and/or lining hardware
    • Incorrect linings on one side
    • Hard spots, heat checks, blueing discoloration of rotor friction surfaces; possibly due to brake drag
    • Glazed rotor friction surfaces
    • Bent or damaged caliper or mounting component
  2. Adjust, repair or replace components as necessary. Refer to Disc Brake System Diagnosis.

Did you find and correct a condition?

Go to Step 7

Go to Step 4

4
  1. Inspect the drum brake system, if equipped, for the following conditions.
    2. • Improper adjustment or improper adjuster operation
    • Weak or damaged return spring or springs
    • Glazed linings
    • Contaminated linings
    • Distorted or damaged linings
    • Incorrect linings on one side
    • Excessively worn or damaged drum on one side
  2. Adjust, repair or replace components as necessary. Refer to Drum Brake System Diagnosis.

Did you find and correct a condition?

Go to Step 7

Go to Step 5

5

  1. Inspect the suspension system for the following conditions.
    2. • Incorrect tire pressures
    • Loose suspension component connections
    • Excessively worn or damaged suspension components
  2. Adjust, repair or replace components as necessary. Refer to Diagnostic Starting Point - Suspension General Diagnosis.

Did you find and correct a condition?

Go to Step 7

Go to Step 6

6

  1. Inspect the steering system for the following conditions.
    2. • Loose steering component connections
    • Excessively worn or damaged steering components
  2. Adjust, repair or replace components as necessary. Refer to Diagnostic Starting Point - Power Steering System.

Did you find and correct a condition?

Go to Step 7

Go to Diagnostic Starting Point - Hydraulic Brakes

7
  1. Install or connect components that were removed or disconnected during diagnosis.
  2. Road test the vehicle in order to confirm proper operation. Refer to Brake System Vehicle Road Test .

Is the condition still present?

Go to Step 2

System OK