For 1990-2009 cars

# Front Brake Squeal (Install New Brake Rotors)

Subject: | Front Brake Squeal (Install New Brake Rotors)

Models: | 1997-99 Chevrolet Malibu

| 1997-99 Oldsmobile Cutlass

This bulletin is being revised to update the service procedure, parts information and provide VIN breakpoints. Please discard Corporate Bulletin Number 99-05-23-001 (Section 5 -- Brakes)

### Built Prior To VIN Breakpoints:

Model | VIN Breakpoint | Plant
--- | --- | ---
Chevrolet Malibu | X6138829 | Oklahoma City
XY125606 | Wilmington
Oldsmobile Cutlass | X6312990 | Oklahoma City

### Condition

Some owners may comment about a squealing type noise coming from the front brakes during a brake application.

### Cause

The squealing noise may be the result of a "slip/stick" condition between the front brake pads and rotors that could cause a high frequency vibration.

### Correction

On vehicles built prior to the VIN breakpoints indicated, this condition can be minimized by replacing both front brake rotors with new "dampened iron" rotors, P/N 18060241. Refer to the Disc Brakes sub-section in the appropriate Service Manual.

On 1997 vehicles, the front brake pads should be inspected during rotor replacement to determine if insulators are present on the backside of the pads. If insulators are not present, the brake pads should be replaced with those contained in the front brake pad kit, P/N 18024383.

Important: Guidelines provided in Corporate Bulletin Number 23-50-05B must be followed to insure proper cleaning, lubricating and assembling of brake and related components.

### Parts Information

Part Number | Description
--- | ---
18024383 | Front Brake Pad Kit
18060241 | Front Brake Rotor

Parts are currently available from GMSPO.

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
H0127 | Rotor Assembly - R&R or Replace | Use published labor operation time
H0042 | Pads, Disc Brake - R&R or Replace