GLOBAL SAFETY FIELD INVESTIGATIONS
DCS6583
URGENT - DISTRIBUTE IMMEDIATELY
Date:

May 23, 2023

Subject: REVISION: N222375790-04 - Customer Satisfaction Program
Park Assist Retrofit
Population Update
Models: 2022 – 2023 Cadillac CT4
2022 – 2023 Cadillac CT5
2022 Cadillac Escalade/Escalade ESV
2022 – 2023 Chevrolet Corvette
2022 Chevrolet Silverado 1500 New
2022 GMC Sierra 1500 New
To:

All General Motors Dealers

This bulletin has been revised to add the 2022 model year Chevrolet Silverado
and GMC Sierra vehicles to the population. The warranty section has been
updated to include labor times for these models. Please discard all previous
copies of N222375790.
As parts become available for additional makes and models involved in this
retrofit, we will communicate the revised bulletin in an upcoming message.
PART ORDERING INFORMATION
Due to limited initial parts availability, dealers should not order parts included
in this field action for use as shelf stock. Parts should only be ordered when
the dealer has confirmed and validated the customer has a scheduled
appointment with the service department.
Dealers will need to place orders CSO (Customer Service Order) and upgrade
to a SPAC, all CSO without a SPAC will be cancelled daily. All orders will
require a unique VIN for each order. If a VIN is not provided with the order, or
has already been used, those orders will be cancelled. This change in process
is due to limited parts availability and to assure we have ample stock for
customers requiring the retrofit.
The Park Assist Retrofit will be executed under 2 separate bulletins:
• N222375790 will cover Vehicle Intelligence Platform (VIP) Electrical
Architecture
• N222375791 will cover Global A Electrical Architecture
Customer Letter Mailing
The customer letter mailing for this phase will begin in June 2023.

Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated May 23, 2023. A list of vehicles in dealer inventory is attached to this
message.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS

Customer Satisfaction Program
N222375790 Park Assist Retrofit
Release Date:
Revision Description:
Attention:

Make
Cadillac
Cadillac
Cadillac
Chevrolet
Chevrolet
GMC

May 2023

Revision:

04

This bulletin is being revised to update the Service Procedure to include additional
models. Please discard all previous copies of N222375790.

This program is in effect until June 30, 2026.

Model
CT4
CT5
Escalade/Escalade ESV
Corvette
Silverado 1500 New
Sierra 1500 New

Model Year
From
To
2022

2023

2022
2022
2022
2022

2022
2023
2022
2022

RPO

Description

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

Correction

Due to the industry-wide semiconductor shortage, the park assist feature is not functional on certain 2022
and 2023 model year vehicles listed above, built beginning December 2, 2021. The affected vehicle
owners should have been made aware of the condition at sale, and notified, that once parts are available,
they would be eligible for a no additional cost retrofit to enable the feature.
Dealers are to replace the park assist control module and setup the serial data gateway module to restore
the Park Assist feature. Some vehicles may also need additional modules to be reprogrammed.

Parts – MUST BE ORDERED BY SPAC, PLEASE SEE NOTES BELOW
Quantity
1
1
1

Part Name
Parking Assist Module
Parking Assist Module
Parking Assist Module

Part No.
84761800
84761801
85131832

Note: Only 1 module needs to be ordered per vehicle. Use the VIN and the GM Electronic Parts Catalog (EPC) to
determine which Parking Assist Module to order.
Do NOT place orders until the customer contacts the dealership to schedule an appointment.
Parts required to complete this recall are to be obtained from General Motors Customer Care and Aftersales (GMCCA).
Please refer to your “involved vehicles listing” before ordering parts. Parts for this Retrofit will be on Order Writing control
initially and all DRO’s (Daily Replenishment Orders) may cancel. Dealers should place orders CSO (Customer Special
Order) and upgrade to SPAC with a VIN. All orders will be reviewed prior to being filled. All CSO may be cancelled
daily. Only SPAC orders with a valid VIN associated with the vehicle listing will be released while on the order
writing control. Due to order writing control orders will not ship as OVN. Please take this into consideration in
shipping if not coming from your Admin PDC.
Reminder: Parts will be removed from SPRINT, they are non-returnable and 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.
For Dealers Location Outside of US/Canada, please order from your regional service part facility.

Copyright 2023 General Motors. All Rights Reserved.

Page 1 of 13

Customer Satisfaction Program
N222375790 Park Assist Retrofit
Warranty Information
Labor
Operation

Labor
Trans.
Net
Description
Time
Type
Item
Install and Program Parking Assist Module, Setup Serial Data
Gateway Module:
9106526*
Corvette
0.7
ZFAT
N/A
Silverado/Sierra Regular Cab+
0.5
Silverado/Sierra Double Cab/Crew Cab+
0.9
Install Parking Assist Module and Program Parking Assist Module,
Body Control Module, and Serial Data Gateway Module:
9106530*
CT4 ** or ***
1.5
CT5 ** or ***
1.4
Escalade/Escalade ESV
1.7
Install Parking Assist Module and Program Parking Assist Module,
Body Control Module, Image Processing Module, and Serial Data
9106531*
Gateway Module:
CT4 ****
1.7
CT5 ****
1.6
Install Parking Assist Module and Program Parking Assist Module,
Image Processing Module, Setup Serial Data Gateway Module
9106655*
Silverado/Sierra Regular Cab++
0.7
Silverado/Sierra Double Cab/Crew Cab++
1.1
**If vehicle is a CT4/CT5 with UD7, see CT4/CT5 with UD7
***If vehicle is a CT4/CT5 with UD5 without UGN, UVZ, UKL, see CT4/CT5 with UD5 without UGN, UVZ, UKL
****If vehicle is a CT4/CT5 with UD5 and UGN, UVZ, or UKL, see CT4/CT5 with UD5 and UGN, UVZ, or UKL
+If vehicle is a Silverado/Sierra with UD5 without UGN, UVZ, UKL, see Silverado/Sierra with UD5 without UGN,
UVZ, UKL
++If vehicle is a Silverado/Sierra with UD5 with UGN, UVZ, or UKL, see Silverado/Sierra with UD5 with UGN,
UVZ, or UKL

Important:

* To avoid warranty transaction rejections, carefully read and follow the instructions below:

6125814

• The Warranty Claim Code from the programming event must be accurately entered in the “Warranty Claim
Code” field of the transaction.
•

When more than one Warranty Claim Code is generated for a programming event, it is required to document all
Warranty Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the
“Warranty Claim Code” field of the transaction, otherwise the transaction will reject. It is best practice to enter
the FINAL code provided by SPS2.

Page 2 of 13

Customer Satisfaction Program
N222375790 Park Assist Retrofit
Warranty Claim Code Information Retrieval

6125774

If the Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS2 system as
follows:
1.
2.
3.
4.

Open TLC on the computer used to program the vehicle.
Select and start SPS2.
Select Settings (1).
Select the Warranty Claim Code tab (2).

The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is
retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code
field.
Service Procedure
Caution: Before downloading the update files, be sure the computer is connected to the internet through a network cable
(hardwired). DO NOT DOWNLOAD or install the files wirelessly. If there is an interruption during programming,
programming failure or control module damage may occur.
Note: Carefully read and follow the instructions below.

•

Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector.
If there is an interruption during programming, programming failure or control module damage may occur.

•

Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will
interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to
www.gmdesolutions.com for further information. If not available, connect a fully charged 12 V jumper or booster
pack disconnected from the AC voltage supply. DO NOT connect a battery charger.

•

Follow the on-screen prompts regarding ignition power mode but ensure that anything that drains excessive power
(exterior lights, HVAC blower motor, etc) is off.

•

Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M)
system status indicators to NO.

Important: The service technician always needs to verify that the VIN displayed in the TLC left side drop down menu and
the top center window match the VIN plate of the vehicle to be programmed prior to using Service Programming System
2 (SPS2) for programming or reprogramming a module.

•

For the TLC application, service technicians need to always ensure that the power mode (ignition) is “ON” before
reading the VIN from the vehicle’s VIN master module and that they do not select a VIN that is already in the TLC
application memory from a previous vehicle.

Page 3 of 13

Customer Satisfaction Program
N222375790 Park Assist Retrofit
•

If the VIN that shows up in the TLC top center window after correctly reading the VIN from the vehicle does not match
the VIN plate of the vehicle, manually type in the VIN characters from the vehicle VIN plate into the TLC top center
window and use these for programming or reprogramming the subject module with the correct vehicle VIN and
software and/or calibrations.

•

The Engine Control Module (ECM) is the master module (for VIP vehicles) that TLC reads to determine the VIN of
the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the ECM also needs
to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate.

•

The Body Control Module (BCM) is the master module (for GEM vehicles) that TLC reads to determine the VIN of
the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the BCM also needs
to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate.

Caution: Be sure the VIN selected in the drop down menu (1) is the same as the vehicle connected (2) before beginning
programming.

5743643

Important: If the vehicle VIN DOES NOT match, the message below will be shown.

5877000

5644477

Page 4 of 13

Customer Satisfaction Program
N222375790 Park Assist Retrofit
Important: Techline Connect screens shown above.
Important: If the same calibration/software warning is noted on the TLC Summary screen, select OK and follow
screen instructions. After a successful programming event, the WCC is located in the Service Programming System
dialogue box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the bulletin.
Caution: It is vitally important that the procedure is completed by a properly trained technician and that the
proper steps are followed for the vehicle make, model, and RPO combination. The parking assist system will
not function properly if the proper procedure is not followed
1.

Determine vehicle make, model and RPO combination.
• If vehicle is a Corvette, see Corvette.
• If vehicle is a CT4/CT5 with UD7, see CT4/CT5 with UD7.
• If vehicle is a CT4/CT5 with UD5 without UGN, UVZ, UKL, see CT4/CT5 with UD5 without UGN, UVZ, UKL.
• If vehicle is a CT4/CT5 with UD5 and UGN, UVZ, or UKL, see CT4/CT5 with UD5 and UGN, UVZ, or UKL.
• If vehicle is an Escalade, see Escalade.
• If vehicle is a Silverado/Sierra with UD5 without UGN, UVZ, UKL, see Silverado/Sierra with UD5 without UGN,
UVZ or UKL
• If vehicle is Silverado/Sierra with UD5 with UGN, UVZ, UKL, see Silverado/Sierra with UD5 with UGN, UVZ,
UKL

CORVETTE
Caution: When starting SPS2, select Reprogram NOT Replace and Reprogram
1.

Remove the existing Parking Assist Control Module. Refer to Parking Assist Control Module Replacement in SI.

2.

Install the new Parking Assist Control Module. Refer to Parking Assist Control Module Replacement in SI.
Note: There are two procedures for K182 Parking Assist Control Module Programming and Setup. Choose the
document that has “without 00Y/00Z”. While the vehicle will have “00Y/00Z”, these are the Parking Assist build shy
codes that this field action is correcting.

3.

Reprogram the Parking Assist Control Module. Refer to K182 Parking Assist Control Module: Programming and
Setup (UD7 without 00Y) in SI.
Note: An error, or several, may come up during setup. Disregard these, they are due to DTCs set due to the
Parking Assist Module installation.
Note: This programming event is for “setup” only.

4.

Perform “setup” on the Serial Data Gateway Module. Select “Setup” on the SPS Supported Controllers screen and
follow the on-screen instructions. Refer to K56 Serial Data Gateway Module: Programming and Setup in SI.

5644478

Page 5 of 13

Customer Satisfaction Program
N222375790 Park Assist Retrofit
Note: The screenshot above is an example of module programming and may not be indicative of the specific module
that is being programmed. Module selection and VIN information have been blacked out.
Important: To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the
Warranty Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of the
WCC on the screen.
5.

Record SPS Warranty Claim Code on job card for warranty transaction submission.

6.

Clear all DTCs.
Note: Depending upon vehicle RPO, it may be equipped with both front and rear parking assist or just rear park
assist.

7.

Verify proper operation of the parking assist system.

CT4/CT5 with UD7
Caution: When starting SPS2, select Reprogram NOT Replace and Reprogram
1.

Remove the existing Parking Assist Control Module. Refer to Parking Assist Control Module Replacement in SI.

2.

Install the new Parking Assist Control Module. Refer to Parking Assist Control Module Replacement in SI.
Note: There are two procedures for K182 Parking Assist Control Module Programming and Setup. Choose the
document that has “without 00Y/00Z”. While the vehicle will have “00Y/00Z”, these are the Parking Assist build shy
codes that this field action is correcting.

3.