# Service bulletin N202310850

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: 10187339
- Published by NHTSA: 2021\-02\-22
- Manufacturer's number: N202310850
- Manufacturer's date: 2020\-12\-01
- NHTSA component: AIR BAGS

## NHTSA's summary

Customer Satisfaction Program. In certain vehicles, driver movement can disrupt the electrical connection to the seat\-mounted inboard airbag system. This airbag system is supplemental and not required equipment under applicable Federal Motor Vehicle Safety Standards. If this occurs, the vehicle?s driver information center will display a ?Service Restraints System? message to the driver before resistance at the connection will prevent the deployment of the airbag. Dealers are to verify the DTC B14DC is present and replace the affected driver inboard side seat wiring harness connector assembly as necessary.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10187339-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10187339-9999.pdf)

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

## Components

Air bags

## Trouble codes named

B14DC

## 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

- [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

## Other bulletins for the same vehicles and component

- [21\-NA\-275](/bulletins/11011993.md), 2024-12-19, Service bulletin: POWER TRAIN; WHEELS; AIR BAGS. This service bulletin provides repair information to correct customer concerns of Wheel Lock Up, ABS Event, Loud Bang and a Flashing “D” on Driver Information Center \(DIC\) when Lightly or Moderately Accelerating Forcing an 8\-7 or 8\-6 Downshift.
- [23\-NA\-085](/bulletins/10239694.md), 2023-07-27, Service bulletin: SEAT BELTS; AIR BAGS; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to correct the condition of Service Restraint System Message / Air Bag Warning MIL / DTC B14DC Set.
- [21\-NA\-005](/bulletins/10239112.md), 2023-07-14, Service bulletin: ELECTRICAL SYSTEM; AIR BAGS. This technical bulletin provides a procedure to replace the air bag and air bag harness to correct a condition of Airbag Malfunction Warning and Airbag Malfunction Indicator Illuminated with DTC B0001\-1B due to corrosion.
- [PIT5509K](/bulletins/10237677.md), 2023-06-13, Service bulletin: AIR BAGS; ELECTRICAL SYSTEM; TRAILER HITCHES. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7\-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
- [PIT5949C](/bulletins/10236169.md), 2023-05-15, Service bulletin: POWER TRAIN; EQUIPMENT; ELECTRICAL SYSTEM; AIR BAGS. This Preliminary information communicates an issue during start up that the following symptoms occur: \- Service Safety Restraints System Message \- Sunroof Inoperative \- Sunshade Lights Inoperative \- Dome Lights Inoperative \- Power Liftgate Inoperative when using switch in overhead console \- DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Dealers are to replace the overhead roof console with a new console that has revised software.
- [PIT5949B](/bulletins/10236134.md), 2023-05-15, Service bulletin: POWER TRAIN; AIR BAGS; ELECTRICAL SYSTEM. This Preliminary information communicates an issue during start up that the following symptoms occur: \- Service Safety Restraints System Message \- Sunroof Inoperative \- Sunshade Lights Inoperative \- Dome Lights Inoperative \- Power Liftgate Inoperative when using switch in overhead console \- DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Engineering is currently working on a fix and in the meantime a customer can cycle the dome light switch on/off to correct the condition during that ignition cycle.
- [23\-NA\-085](/bulletins/10236071.md), 2023-05-10, Service bulletin: ELECTRICAL SYSTEM; SEATS; AIR BAGS. This technical bulletin provides a procedure to correct the condition of Service Restraint System Message / Air Bag Warning MIL / DTC B14DC Set.
- [PIT4322N](/bulletins/10232819.md), 2023-03-13, Service bulletin: AIR BAGS; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\). This Preliminary Information communication provides information to the technician about vehicles that have an unwanted Stability Activation and/or a Service Stability message on the Driver Information Center. Technician may find a Diagnostic Trouble Code C0710. Technician should inspect for vehicles modifications before any in\-depth diagnostics are performed.
- [PIT5949](/bulletins/10224301.md), 2022-10-17, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; AIR BAGS. This Preliminary information communicates an issue during start up that the following symptoms occur: \- Service Safety Restraints System Message \- Sunroof Inoperative \- Sunshade Lights Inoperative \- Dome Lights Inoperative \- Power Liftgate Inoperative when using switch in overhead console \- DTCs U1121 set in the BCM and B1A7A set in the Restraints Module Engineering is currently working on a fix and in the meantime a customer can cycle the dome light switch on/off to correct the condition during that ignition cycle.
- [PIT5774E](/bulletins/10213790.md), 2022-06-13, Service bulletin: EQUIPMENT; POWER TRAIN; AIR BAGS. This Preliminary information communicates an issue with: Overhead Console Inoperative / Service Safety Restraints Message / Sunroof Inoperative / DTC's B1A7A and U1121. Dealers are to cycle the power to the overhead console to correct the issue. Engineering has released updated roof consoles to correct this concern. Dealers are to replace the roof console.

JSON: [/v1/bulletins/10187339](/v1/bulletins/10187339)

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