Brakes - Front Brake Rattle Noise Driving Over Bumps

TECHNICAL

Bulletin No.: 10-05-23-003

Date: May 07, 2010

Subject: Front Brake Rattle Noise When Driving Over Bumps (Replace Caliper Bracket and Brake Pads)

Models:
2003-2008 Pontiac Vibe

Condition

Some customers may experience a front brake rattle type noise when the vehicle is traveling over bumps.

Correction

Updated front disc brake caliper mountings and disc brake pad support plates are available to eliminate this condition.

1. Conduct a road test to verify the noise condition. The front brake rattle noise will occur when the front tire runs over a depression in the road.
2. Remove the front disc brake pad. Refer to Front Disc Brake Pads Replacement in SI

Important
When replacing worn pads, the anti-squeal shims MUST be replaced together with the pads.
- Make sure to install the shims in the correct positions and directions.
- Apply a thin layer of disc brake grease to the area that contacts the anti-squeal shim.
- Disc brake grease can come out slightly from the area where the anti-squeal shim is installed. Be sure to wipe off any excessive grease to avoid pad contamination.
- Make sure that disc brake grease is NOT applied onto the lining surface.

3. Install the front anti-squeal shims to the new pads, P/N 19204384.

Important
DO NOT apply grease to the friction surfaces of the brake pads or the disc rotor.

Apply Disc Brake Grease to the Anti-Squeal Shims





Area for Disc Brake Grease Application

Also Apply Disc Brake Grease Here (1-2 mm [0.04-0.08 in.])

4. Install the new caliper brackets with GM P/N 88975879.
5. Install the new pads.
6. Road test the vehicle to confirm the front brake rattle noise is no longer present.

Parts Information





Warranty Information





For vehicles repaired under warranty, use the table.





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