NHTSA ID Number: 10205557
Manufacturer Communication Number: 21NA197
Summary
This technical bulletin provides repair information to correct a customer concern of Power to the 110V/120 Outlet is Interrupted During an Auto Stop/Start Event.
6 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
CADILLAC | ESCALADE | 2021 |
| CADILLAC | ESCALADE ESV | 2021 |
| CHEVROLET | SUBURBAN | 2021 |
| CHEVROLET | TAHOE | 2021 |
| GMC | YUKON | 2021 |
| GMC | YUKON XL | 2021 |
Condition
Some customers may comment the 110/120 volt power outlets are inoperative during an Auto Stop/Start event. The 110 VAC outlet may have experienced a power interruption during the start of the vehicle.
Cause
The cause of this condition may be a concern within the T1 DC/AC Converter Control Module.
Correction
Replace the Accessory AC and DC Power Control Module (2). The new module has hardware and software modifications to maintain limited operation during Auto-Start events.
Refer to Accessory AC and DC Power Control Module Replacement, in SI.
Parts Information
| Causal Part | Description | Part Number | Qty |
| X | MODULE ASM-ACSRY AC & DC PWR CONT (W/BRKT | 84981765 | 1 |
SEOCONTENT-START
Service Bulletin Bulletin No.: 21-NA-197
Date: November, 2021
TECHNICAL
Subject: Power to the 110V/120 Outlet is Interrupted During an Auto Stop/Start Event (United
States ONLY)
This bulletin replaces PIT5787A. Please discard PIT5787A.
Brand: Model:
Model Year: Date Breakpoints: Engine: Transmission:
from to from to
Cadillac Escalade Models
2021 2021 SOP June
Chevrolet 2, 2021 All All
Suburban
Tahoe
GMC Yukon Models
Involved Region or Country United States, Canada
Additional Options (RPOs) Without 9C1 (SALES PACKAGE-POLICE VEHICLE), Equipped with ENTERTAINMENT
PKG-RR SEAT, DUAL DISPLAY, SEAT BACK (UW9)
Condition
Some customers may comment the 110/120 volt power outlets are inoperative during an
Auto Stop/Start event. The 110 VAC outlet may have experienced a power interruption
during the start of the vehicle.
Cause The cause of this condition may be a concern within the T1 DC/AC Converter Control
Module.
Page 2 November, 2021 Bulletin No.: 21-NA-197
Correction
5569856
Replace the Accessory AC and DC Power Control Module (2). The new module has
hardware and software modifications to maintain limited operation during Auto-Start
events.
Refer to Accessory AC and DC Power Control Module Replacement, in SI.
Parts Information
Causal
Part
Description Part
Number
Qty
X MODULE ASMACSRY
AC & DC
PWR CONT
(W/BRKT
84981765 1
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
5486228* New Accessory AC and DC Power Control Module
Replacement
Escalade – 1.0 hr
All Other Models – 1.1 hr
*This is a unique Labor Operation for Bulletin use only.
Version 1
Modified Released November 15, 2021
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: 21-NA-197
Date: November, 2021
NHTSA ID Number: 10185706
Manufacturer Communication Number: PIT5787A
Summary
This Preliminary information communicates an issue with the 110 volt power outlets turning off during an Auto Stop event, which is normal operation.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5787A
Published date: 12/1/2020
MC-10185706-9999.pdf 246.844KB
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