2014 - 2020 Corvette: Service Bulletin: #17-NA-040: Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies - (August 11, 2020)

#17-NA-040: Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies - (August 11, 2020)

This Bulletin replaces PI1496C and PI0917F. Please discard PI1496C and PI0917F.

Parts Information

Description	Part Number	Qty
Lubricant	19303310 (In Canada, use 19303311)	3

Warranty Information

For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.

Labor Operation	Description	Labor Time
2480038*	Cleaning and Reapplying Lubricant to Front Disc Brake Pads	0.6 hr
Add	Cleaning and Reapplying Lubricant to Rear Disc Brake Pads	0.4 hr
*This is a unique Labor Operation for Bulletin use only.

Service Procedure

Important: The use of wheel cleaners or power washers directly pointed at the brake caliper may wash the copper paste off of the brake pads. It may be necessary to apply the copper paste again if the lubricant is washed away. The copper paste should be applied whenever the brake pads are removed or replaced.

Important: (Chevrolet SS Models Only) Do not apply the copper paste to the back of the backing plate.

Apply a coat of copper paste to completely cover the pad backing plate abutments on each end. The paste should not extend onto the friction material. Follow the instructions listed below.

Buick Regal

 

(1)	Abutment Area

 

(1)	Cleaned Abutment Area
(2)	Correct Amount of Copper Paste
(3)	Incorrect Amount of Copper Paste

1. Remove the front disc brake pads. Refer to Front Disc Brake Pads Replacement in SI.
2. Using acrysol Kent Industries Part# P2005 or equivalent, wipe clean both ends of the abutment area on the front pads and calipers.
3. Apply approximately 0.10 g (0.0035 oz) of copper paste to each end of the disc brake pad abutments that contact the brake caliper bracket.

   Note: Avoid a light apply of the paste as illustrated above.

4. Re-install the front disc brake pads. Refer to Front Disc Brake Pads Replacement in SI.

Cadillac Models and Chevrolet Models

 

(1)	Abutment Area

 

(1)	Cleaned Abutment Area
(2)	Correct Amount of Copper Paste
(3)	Incorrect Amount of Copper Paste

1. Remove the front disc brake pads. Refer to Front Disc Brake Pads Replacement in SI.
2. Remove the rear disc brake pads. Refer to Rear Disc Brake Pads Replacement in SI.
   
   
3. Using acrysol Kent Industries Part# P2005 or equivalent, wipe clean both ends of the abutment area on the front and rear pads and calipers.
4. Apply approximately 0.10 g (0.0035 oz) of copper paste to each end of the disc brake pad abutments that contact the brake caliper bracket.

   Note: Ensure that the ends of the brake pads have enough copper paste applied, if not, could result of the noise condition returning.

   
   
   
5. (Chevrolet SS Models Only) Apply a rectangular shape of copper paste in the center of the spacer before installing on the back of the pad.

   Note: DO NOT replace brake pads for this condition.

6. Re-install the front disc brake pads. Refer to Front Disc Brake Pads Replacement in SI.
   
   
   

   Important: DO NOT remove the silencers (1) on the pads.

   Important: Always replace brake pads with Brembo GM OEM pads (2). Aftermarket pads could result in the braking performance changing in many ways.

7. Re-install the rear disc brake pads. Refer to Rear Disc Brake Pads Replacement in SI.