Bulletin No.: PI1498A
Date: Nov-2015

Subject:

Clicking Noise from Front and/or Rear Wheels

Models:

2014-2016 Chevrolet Corvette

Attention:

This PI also applies to any of the above models that may be Export vehicles.

This PI has been revised to add the 2016 model year. Please discard PI1498.

Condition/Concern
Some customers may comment on a clicking noise emanating from either the front or rear wheels location. This condition may be more predominate at low
speeds (10-20 mph or 16-32 km/h) during full wheel lock turns on dry clean pavement. The clicking noise is generally noted as approximately 1 to 4 clicks per
wheel revolution.
This may be caused by interaction between the wheel mounting face and the wheel mounting surface on the brake rotor.

Recommendation/Instructions
Important: Do NOT replace the wheels or brake rotors for this condition.
If you encounter a vehicle with the above concern, follow the procedure below.
1.

Remove all four of the wheels. Refer to Tire and Wheel Removal and Installation in SI.

2.

Clean all four of the wheels mounting surface as follows.

•

Using a clean cloth dampened with approved brake cleaner (ex. Part number 19287400 (US), 88901247 (Canada)) wipe the mounting surface of the
wheel(s), removing any residual grey or black material that has accumulated on the wheel mounting surface.
Note: All cleaning must be done by hand, do NOT use pneumatic or power tools.

3.

Clean the wheel mounting surface of the brake rotors, or sometimes referred to as the brake rotor top hats, as follows.

•

Using a clean cloth dampened with approved brake cleaner (ex. Part number 19287400 (US), 88901247 (Canada)) wipe the wheels mounting
surface of the rotor (brake rotor top hat) removing any residual grey or black material that has accumulated on the rotors.
Note: During the cleaning process be sure to clean the rotor near the wheel pilot at the center of the rotor.
Note: All cleaning must be done by hand, do NOT use pneumatic or power tools.

4.

Reinstall all four of the wheels using the original wheel nuts and torque specs (140 Y or 104 lb ft). Refer to Tire and Wheel Removal and Installation in
SI.
Important: Be sure wheels and rotors are thoroughly dry prior to installation.

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

8080168*

Clean Mating Surface of Wheels and Rotors Due to Clicking Noise

1.1 hrs

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*This is a unique Labor Operation for Bulletin use only. It will not be published in the Labor Time Guide.

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.

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