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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brake System >> Diagnostic Information and Procedures >> Braking Action Uneven - Pulls to One Side >> Test Description

Test Description

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

  1. 4 

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

  2. 5 

    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 - Vehicle
2
  1. Inspect the hydraulic brake system for the following conditions.
    • Kinked, pinched or damaged brake pipe or flexible brake hose
    • Sticking or improperly operating caliper piston
    • 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 6  Go to Step 3 
3
  1. Inspect the disc brake system for the following conditions.
    • 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 6  Go to Step 4 
4 
  1. Inspect the suspension system for the following conditions.
    • 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 - Vehicle .
Did you find and correct a condition?		 Go to Step 6  Go to Step 5 
5 
  1. Inspect the steering system for the following conditions.
    • Loose steering component connections
    • Excessively worn or damaged steering components
  2. Adjust, repair or replace components as necessary. Refer to Diagnostic Starting Point - Vehicle .
Did you find and correct a condition?		 Go to Step 6  Go to Diagnostic Starting Point - Vehicle
6
  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
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