Manual:HUMMER Hummer H3 Base 2010Page:6337 / 37523



Brake Pulsation — 2010 Hummer H3 Base, Automatic Service Manual

Brake Pulsation

Step Action Yes No
DEFINITION: Fluctuation or pulsation is felt through the brake pedal, steering wheel, seat, floor, and/or in the vehicle 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 disc brake system for the following conditions.
    • Excessive thickness variation of rotor friction surfaces
    • Excessive assembled lateral runout (LRO) of rotor friction surfaces
    • Hard spots, heat checks, bluing discoloration of rotor friction surfaces; possibly due to brake drag
    • Excessive corrosion of rotor friction surfaces; including red, gray or black oxidation
    • Loose, damaged or missing caliper or lining hardware
    • Bent or damaged caliper or mounting component
    • Excessive LRO of wheel hub/axle flange; due to damage and/or loose or excessively worn bearings
  2. Adjust, repair or replace components as necessary. Refer to Disc Brake System Diagnosis .
Did you find and correct a condition?		 Go to Step 3  Go to Symptoms - Hydraulic Brakes 
3
  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