Service Update N202303030 Park Brake Caliper Guide Pin Missing Retention Clip – 2020 Chevrolet Corvette

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GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5447
URGENT – DISTRIBUTE IMMEDIATELY
Date: July 7, 2020
Subject: N202303030 – Service Update
Park Brake Caliper Guide Pin Missing Retention Clip
Models: 2020 Chevrolet Corvette
To: All General Motors Dealers
General Motors is releasing Service Update N202303030 today. The total
number of U.S. vehicles involved is approximately 2,416. Please see the
attached bulletin for details.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated July 8, 2020 or sooner. A list of involved vehicles in dealer new inventory is
attached to this message. Please hold all warranty transactions until IVH has been
updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS
Service Update
N202303030 Park Brake Caliper Guide Pin Missing Retention Clip
Copyright 2020 General Motors. All Rights Reserved. Page 1 of 2
Release Date: July 2020 Revision: 00
Attention: This service update includes vehicles in dealer inventory and customer vehicles that return to the
dealership for any reason. This bulletin will expire at the end of the involved vehicle’s New Vehicle Limited
Warranty period.
Make Model
Model Year
From To RPO Description
Chevrolet Corvette 2020 2020
Involved vehicles are marked “open” on the Investigate Vehicle History screen in GM Global Warranty Management
system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections
and/or repairs.
Condition Certain 2020 model year Chevrolet Corvette vehicles may be missing the park brake caliper guide pin
retention clip. A dislocated pin may damage the wheel.
Correction Dealers will inspect for retaining clip, and if necessary, replace the missing clip.
Parts
Quantity Part Name Part No.
4 Parking Brake Caliper Pin Guide Clip 84966939
It is estimated that less than 1% of involved vehicles will require parking brake caliper pin guide clip replacement. Please
order parts accordingly.
Reminder: Parts may be removed from Retail Inventory Management (RIM). Dealers should review the affected parts to
confirm RIM managed status. Parts may have quantity limiters in effect.
Warranty Information
Labor
Operation Description
Labor
Time
Trans.
Type
Net
Item
9105165 Inspect Only – No Further Action Required 0.2
ZFAT N/A
9105166 Inspect and Replace Parking Brake Caliper Pin Guide Clip 0.3
Service Update
N202303030 Park Brake Caliper Guide Pin Missing Retention Clip
Page 2 of 2
Service Procedure
5609080
1. Using a borescope or a flashlight and mirror, inspect both the left and right rear parking brake calipers to determine
if they are missing the retaining clip, as shown above.
• If any retaining clips are missing on either caliper, as shown in by 1 above, proceed to step 2.
• If no retaining clips are missing on either caliper, as shown by 2 above, no further action is required.
2. Lift the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
3. Remove the rear wheels. Refer to Tire and Wheel Removal and Installation in SI.
4. Replace any missing retaining clips.
5. Reinstall the rear wheels. Refer to Tire and Wheel Removal and Installation in SI.
6. Lower the vehicle.
Dealer Responsibility
Whenever a vehicle subject to this service update enters your vehicle inventory or is in your facility for service in the
future, and the vehicle is still covered under the New Vehicle Limited Warranty, you must take the steps necessary to be
sure the service update correction has been made before selling or releasing the vehicle.
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers’ possession
and subject to this bulletin must be held and inspected/repaired per the service procedure of this bulletin before customers
take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealer-traded,
released to auction, used for demonstration, or any other purpose.
All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System
(CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting
an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified
for sale within the CPOIS system, or once again be used in the CTP program.
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 tools, equipment, 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 dealer for information on whether your
vehicle may benefit from the information.
We Support
Voluntary Technician
Certification

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