17NA040
Service Bulletin Details
Public Details for: 17NA040
This technical bulletin provides a procedure to correct a condition of brake squeal or squeak noise intermittently on initial brake applies.
- 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 -
Models from 2020
2020 CHEVROLET CORVETTE |
Models from 2019
2019 BUICK REGAL |
2019 CADILLAC ATS |
2019 CADILLAC CT6 |
2019 CADILLAC CTS |
2019 CADILLAC XTS |
2019 CHEVROLET CORVETTE |
Models from 2018
2018 BUICK REGAL |
2018 CADILLAC ATS |
2018 CADILLAC ATS-V |
2018 CADILLAC CT6 |
2018 CADILLAC CTS |
2018 CADILLAC CTS-V |
2018 CADILLAC XTS |
2018 CHEVROLET CORVETTE |
2018 CHEVROLET SS |
Models from 2017
2017 BUICK REGAL |
2017 CADILLAC ATS |
2017 CADILLAC ATS-V |
2017 CADILLAC CT6 |
2017 CADILLAC CTS |
2017 CADILLAC XTS |
2017 CHEVROLET CORVETTE |
2017 CHEVROLET SS |
Models from 2016
2016 BUICK REGAL |
2016 CADILLAC ATS |
2016 CADILLAC ATS-V |
2016 CADILLAC CT6 |
2016 CADILLAC CTS |
2016 CADILLAC CTS-V |
2016 CADILLAC XTS |
2016 CHEVROLET CORVETTE |
2016 CHEVROLET SS |
Models from 2015
2015 BUICK REGAL |
2015 CADILLAC ATS |
2015 CADILLAC CTS |
2015 CADILLAC XTS |
2015 CHEVROLET CORVETTE |
2015 CHEVROLET SS |
Models from 2014
2014 BUICK REGAL |
2014 CADILLAC ATS |
2014 CADILLAC CTS |
2014 CADILLAC XTS |
2014 CHEVROLET CORVETTE |
2014 CHEVROLET SS |
Models from 2013
2013 BUICK REGAL |
2013 CADILLAC ATS |
2013 CADILLAC XTS |
Bulletin No.: Service Bulletin Date: 17-NA-040 August, 2020 TECHNICAL Subject: Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies Brand: Model: Buick Regal GS ATS XTS Cadillac CTS (VIN A) Model Year: to 2013 2019 2019 Engine: Transmission: — All All — All All — All All from to 2013 2014 ATS-V CTS-V VIN: from 2016 CT6 Chevrolet Corvette 2014 2020 SS 2014 2017 Involved Region or Country North America, Japan, Europe, Russia, Middle East Condition 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. Correction Apply a coat of copper paste to completely cover the pad backing plate abutments on each end. 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. 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. Copyright 2020 General Motors LLC. All Rights Reserved. Page 2 August, 2020 Buick Regal Bulletin No.: 17-NA-040 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 3326987 Legend (1) Abutment Area 3326987 Legend (1) Abutment Area 4064756 Legend (1) (2) (3) Cleaned Abutment Area Correct Amount of Copper Paste 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. 4064756 Legend (1) (2) (3) Cleaned Abutment Area Correct Amount of Copper Paste 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. Bulletin No.: 17-NA-040 August, 2020 4337633 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. Page 3 4364283 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. 4337814 4364263 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. Page 4 August, 2020 Bulletin No.: 17-NA-040 Parts Information For Export Regions that may not be able to obtain the part numbers below, please use an appropriate equivalent. Description Lubricant Part Number 19303310 (In Canada, use 19303311) Qty 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. Version 5 Modified March 6, 2017 – Added the Cadillac CT6 model. March 17, 2017 – Removed an Important statement from Service Procedure. November 30, 2018 – Added the 2018 and 2019 Model Years. August 11, 2020 – Added the 2020 Corvette Model, updated the Involved Region or Country section, added an Export region statement to the Parts Information and relocated the Parts Information and Warranty Information sections. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION