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PI0917B: Front Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies - (Dec 10, 2013)
Front Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies
2013-2014 Buick Regal GS
2013-2014 Cadillac ATS, Equipped with RPO J55
2013-2014 Cadillac XTS Equipped with RPO J64
2014 Cadillac CTS Sedan Equipped with RPO J55 orJ56
2014 Chevrolet Corvette, SS
This PI has been revised to update the Models and the Parts Information. Please discard PI0917A.

Some customers may comment on a squeal or squeak noise from the front brakes. This condition normally only occurs on initial brake applications after the vehicle has sat for an extended time. The condition occurs typically under light braking, in speeds under 16 km/h (10 mph). After 1-6 brake applies, or after braking at higher speeds, the noise no longer occurs. This condition may occur more often in high humidity conditions.

Important: Do not apply the lubricant to the back of the backing plate.

Apply a light coat of the lubricant to completely cover the pad backing plate abutments on each end. The lubricant should not extend onto the friction material. Refer to the illustration below.

Object ID: 3291081Click here for detailed picture of the image.
Parts Information
The lubricant can be obtained from the Warranty Parts Center (WPC). Please use the form at the end of this bulletin to order the part.

Part Number



WPC# 741



* One tube will remedy approximately 5 vehicles.

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation


Labor Time


Apply Lubricant to Front Disc Brake Pads

0.6 hr

*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.
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