# Service bulletin PIT5949

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: 10224301
- Published by NHTSA: 2022\-10\-17
- Manufacturer's number: PIT5949
- Manufacturer's date: 2022\-09\-27
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; AIR BAGS

## NHTSA's summary

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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10224301-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10224301-9999.pdf)

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

## Components

Air bags, Electrical system, Transmission and driveline, Body control module

## Trouble codes named

B1A7A, U1121

## Vehicles listed

- 2021 to 2023 CADILLAC ESCALADE ESV
- 2021 to 2023 CHEVROLET SUBURBAN
- 2021 to 2023 CHEVROLET TAHOE
- 2023 GMC YUKON
- 2021 to 2022 GMC YUKON XL

## Other bulletins for the same vehicles and component

- [PIT6011](/bulletins/10238494.md), 2023-07-05, Service bulletin: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. This Preliminary information communicates an issues after After Performing Recall N222386380 Some Police Options / Features May Have Been Unintentionally Enabled or Disabled. Dealers are to reprogram the BCM to correct these concerns.
- [PIT5936B](/bulletins/10224294.md), 2022-10-17, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. This Preliminary information communicates some customer may comment the headlights are on during daylight conditions with DTC B108E set. Dealers are to reprogram the BCM with updated calibrations to correct this issue.
- [PIT5922](/bulletins/10216353.md), 2022-07-25, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. This Preliminary information communicates information on replacing window motors or regulators and reprogramming the BCM with necessary calibrations due to supplier change in parts.
- [22NA044](/bulletins/10215768.md), 2022-07-18, Service bulletin: STRUCTURE; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; ELECTRICAL SYSTEM. Check Engine MIL Illuminated in DIC Set by Body Control Module with DTC P0607
- [PIT5873B](/bulletins/10210342.md), 2022-04-18, Service bulletin: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; POWER TRAIN; PARKING BRAKE. This Preliminary information communicates an issue when remote start is used the engine may stall when the push to start button is pressed. Dealers are to reprogram the BCM to correct this issue.
- [22\-NA\-044](/bulletins/10210196.md), 2022-04-08, Service bulletin: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. This service bulletin provides repair information to correct a customer concern of Check Engine MIL Illuminated in DIC Set by Body Control Module with DTC P0607.
- [22\-NA\-052](/bulletins/10208900.md), 2022-03-09, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. This service bulletin provides repair information to correct a customer concern of DTC B1038.64 set in the BCM and Door Ajar Message on Driver Information Center \(DIC\).
- [PIT5789A](/bulletins/10187164.md), 2021-02-16, Service bulletin: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. This Preliminary information communicates an issues with an SES MIL and DTC P2B87 setting. Engineering is working on releasing updated BCM cals to correct the concern.
- [PIT5789A](/bulletins/10185713.md), 2021-01-25, Service bulletin: ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. This Preliminary information communicates an issues with an SES MIL and DTC P2B87 setting. Engineering is working on releasing updated BCM cals to correct the concern.

JSON: [/v1/bulletins/10224301](/v1/bulletins/10224301)

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