# Service bulletin N202317390 01

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10187235
- Published by NHTSA: 2021\-02\-16
- Manufacturer's number: N202317390 01
- Manufacturer's date: 2021\-01\-29
- NHTSA component: AIR BAGS; EXTERIOR LIGHTING; SEATS; ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL

## NHTSA's summary

Customer Satisfaction Program \(Revised Service Procedure\). Certain vehicles may have a condition in which the brake system control module \(BSCM\) may set and latch an internal fault in the module?s on\-board diagnostics \(OBD\) buffer. When the fault is present, no malfunction indicator lamp \(MIL\) is illuminated and there is no driver information center \(DIC\) message. If an over the air \(OTA\) software update is pushed to an OBD module and the customer accepts it through the Infotainment system, the update will fail because the presence of the active fault will block the OTA update. The customer may notice that the OTA update has failed with an error message on the DIC. This fault is not visible through dealer tools. Dealers are to reprogram the BSCM.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187235-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10187235-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Air bags, Electrical system, Lighting, Seats, Throttle and cruise control

## Vehicles listed

- 2021 CADILLAC ESCALADE ESV
- 2021 CADILLAC ESCALADE NA
- 2021 CHEVROLET SUBURBAN
- 2021 CHEVROLET TAHOE
- 2021 GMC YUKON
- 2021 GMC YUKON XL

## Recalls for the same vehicles and component

- [2024060](/recalls/tc/2024060.md), 2024-02-01: Lights And Instruments
- [2023472](/recalls/tc/2023472.md), 2023-08-24: Lights And Instruments
- [2022634](/recalls/tc/2022634.md), 2022-11-03: Lights And Instruments
- [22V827000](/recalls/nhtsa/22V827000.md), 2022-11-03: EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
- [2022456](/recalls/tc/2022456.md), 2022-08-11: Seats And Restraints
- [21V421000](/recalls/nhtsa/21V421000.md), 2021-06-10: AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT; ELECTRICAL SYSTEM:SOFTWARE
- [2021348](/recalls/tc/2021348.md), 2021-06-03: Airbag
- [2021165](/recalls/tc/2021165.md), 2021-03-18: Seats And Restraints
- [2020645](/recalls/tc/2020645.md), 2020-12-23: Seats And Restraints
- [2020628](/recalls/tc/2020628.md), 2020-12-21: Lights And Instruments

## Other bulletins for the same vehicles and component

- [23\-NA\-170](/bulletins/11024486.md), 2025-10-25, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
- [24\-NA\-022](/bulletins/11019377.md), 2025-06-07, Service bulletin: SEATS. This technical bulletin provides repair information to correct a customer concern of SUV Second Row Seat Bolt Torque Pattern.
- [21\-NA\-166](/bulletins/11019325.md), 2025-06-06, Service bulletin: EXTERIOR LIGHTING; STEERING. This informational bulletin provides information on the turn signal stalk not cancelling and/or mis cancelling.
- [24\-NA\-229](/bulletins/11019017.md), 2025-06-03, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
- [25\-NA\-087](/bulletins/11017595.md), 2025-05-02, Service bulletin: ELECTRICAL SYSTEM. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- [23\-NA\-185](/bulletins/11017255.md), 2025-04-28, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; STEERING. This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases \- Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, Engagement/Disengagement/Ratcheting Concerns.
- [13\-08\-116\-001K](/bulletins/11017244.md), 2025-04-25, Service bulletin: ELECTRICAL SYSTEM. The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
- [24\-NA\-098](/bulletins/11017207.md), 2025-04-24, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. This service bulletin provides information for dealers/technicians on Service Programming System \(SPS\) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
- [15\-06\-03\-001F](/bulletins/11017031.md), 2025-04-15, Service bulletin: ELECTRICAL SYSTEM. This service bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
- [PIE0820A](/bulletins/11016912.md), 2025-04-09, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. This engineering information \(EI\) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the power sliding console being inoperative.

JSON: [/v1/bulletins/10187235](/v1/bulletins/10187235)

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