Service Update N202316150 Starter Nut Torqued Incorrectly – Potential for Arcing – 2020 Cadillac CT5

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GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5553
URGENT – DISTRIBUTE IMMEDIATELY
Date: October 22, 2020
Subject: N202316150 – Service Update
Starter Nut Incorrect Torque Possible Arcing
Models: 2020 Cadillac CT5 equipped with 3.0 L Engine (RPO LGY)
To: All General Motors Dealers
General Motors is releasing Service Update N202316150 today. The total
number of U.S. vehicles involved is approximately 29. 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 October 23, 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
N202316150 Starter Nut Torqued Incorrectly – Potential for Arcing
Copyright 2020 General Motors. All Rights Reserved. Page 1 of 3
Release Date: October 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
Cadillac CT5 2020 2020 LGY
3.0L Twin Turbo V6 Engine, SIDI
with Automatic Stop/Start
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 Cadillac CT5 vehicles had the incorrect torque applied to the starter nut. (6Nm
instead of 12Nm). The nut may loosen over time due to insufficient clampload. This could cause
intermittent start issues, a no start condition, or prolonged crank times. Arcing or sparking may also
occur.
Correction Dealers will tighten the starter nut to 12 Nm and replace any parts that show arcing.
Parts
Quantity Part Name Part No.
1 Starter Cable 84882875
1 Starter Terminal Nut 11104191
1 Starter 12667973
1 Turbo Exhaust Gasket 12687531
1 Catalytic Converter Gasket 84534856
2 Charge Air Cooler Inlet Tube Seal 12659280
2 Engine Oil Cooler Seal 12698626
1 Turbo Oil Return Pipe Gasket 12670888
4 Engine Mount Bolts 11547742
Note: Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which part(s) to order after inspecting the
vehicle.
Due to the small number of vehicles involved, (30), and due to limited initial parts availability, dealers are encouraged not
to order parts for use as shelf stock. Parts should only be ordered when inspection determines that it is necessary to
replace parts that show arcing.
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
9105340 Inspect And Torque Starter Positive Terminal Nut only 2.0
ZFAT N/A
9105341*
Inspect And Torque Starter Positive Terminal Nut
Add: Starter Replacement
Add: Auxiliary Generator Battery Jumper Cable Replacement
Add: Starter AND Auxiliary Generator Battery Jumper Cable
Replacement
2.0
2.7
1.1
3.8
* You may only claim ONE of the three add conditions. They are mutually exclusive to each other.
Service Procedure
1. Remove the Starter Heat Shield. Refer to Starter Heat Shield Replacement (LGY) in SI.
2. Remove both bolts securing the starter.
Service Update
N202316150 Starter Nut Torqued Incorrectly – Potential for Arcing
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3. Rotate the starter approximately 90 degrees towards the driver’s side of the car (as shown) to gain access to the
starter B+ terminal.
4. Inspect the starter terminal for evidence of arcing (it may be helpful to use a mirror or borescope). If evidence of
arcing is found on the nut or starter terminal, replace the starter.
• If no evidence of arcing is found, torque the starter B+ terminal nut to 9 lb-ft (12 N-m).
• If evidence of arcing is found on the nut or starter terminal, replace the starter. Refer to Starter Replacement in
SI.
• If evidence of arcing is found on the battery positive cable, replace it. Refer to Auxiliary Generator Battery Jumper
Cable Replacement in SI.
5. Install the starter bolts and tighten to 43 lb-ft (58 N-m).
6. Replace the starter heat shield and all associated components. Refer to Starter Heat Shield Replacement (LGY) in
SI.
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.
Service Update
N202316150 Starter Nut Torqued Incorrectly – Potential for Arcing
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Dealer Reports
The Inventory tab of the Open Vehicle Report will contain Service Update Bulletin VINs that apply to this field action.
This information is intended to assist dealers with the PROMPT COMPLETION of these vehicles. The Customer In-
Service tab will not contain Service Update Bulletin VIN data because the intent of a Service Update Bulletin is to not
inconvenience a customer with a special trip for service. Service Update Bulletins are to be completed when the
customer is in for a regularly scheduled visit.
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
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