Brake Pulsation
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
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 Diagnostic Starting Point - Hydraulic Brakes |
| 2 |
- 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, blueing 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
- 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 Diagnostic Starting Point - Hydraulic Brakes |
| 3 |
- Install or connect components that were removed or disconnected during diagnosis.
- 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 |