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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1322 (Hydraulic Brake System) >> Diagnostic Information and Procedures >> Braking Action Uneven - Pulls to One Side (Two-mode Hybrid) >> Test Description

Test Description

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

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 Symptoms - Hydraulic Brakes 
2
  1. Inspect the brake hydraulic and assist systems for the following conditions:
    • Kinked, pinched or damaged brake pipe or flexible brake hose
    • Sticking or improperly operating caliper piston
    • Brake fluid leak
  2. Perform the entire brake and hydraulic assist system diagnostic procedure. Refer to Brake Hydraulic and Assist System Diagnosis (Two-mode Hybrid) .
  3. Adjust, repair or replace components as necessary.
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.
    • 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. Perform the disc brake system diagnostic procedure. Refer to Disc Brake System Diagnosis .
  3. Adjust, repair or replace components as necessary.
Did you find and correct a condition?		 Go to Step 7  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 Symptoms - Suspension General Diagnosis .
Did you find and correct a condition?		 Go to Step 7  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 Symptoms - Power Steering System .
Did you find and correct a condition?		 Go to Step 7  Go to Step 6 
6
  1. Replace the brake master cylinder for an improperly functioning secondary circuit. Refer to Master Cylinder Replacement (JD9, JF3, JF7) , Master Cylinder Replacement (Two-Mode Hybrid)  or Master Cylinder Replacement (JH6, JH7) .
  2. Pressure bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual) , Hydraulic Brake System Bleeding (Pressure)  or Hydraulic Brake System Bleeding (Two-mode Hybrid) .
  3. Perform the entire Antilock Brake System Automated Bleed Procedure .
Did you find and correct a condition?		 Go to Step 7  Go to Symptoms - 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
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