Brake Pulsation (Non-Hybrid)
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.
| 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 |
- 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
- Perform the disc brake system diagnostic procedure. Refer to Disc Brake System Diagnosis .
- Adjust, repair or replace components as necessary.
Did you find and correct a condition? |
Go to Step 3 |
Go to Symptoms - 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 |