# Service bulletin 21NA139

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: 10200140
- Published by NHTSA: 2021\-08\-09
- Manufacturer's number: 21NA139
- Manufacturer's date: 2021\-06\-21
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\)

## NHTSA's summary

This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp \(MIL\) Illuminated \- DTC P3055 Set.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200140-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200140-9999.pdf)

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

## Components

Electrical system, Engine, Engine control module

## Trouble codes named

P3055

## Vehicles listed

- 2017 to 2021 BUICK ENCLAVE
- 2017 to 2019 BUICK LACROSSE
- 2020 BUICK LACROSSE
- 2018 to 2020 BUICK REGAL
- 2017 to 2019 CADILLAC CT6
- 2019 to 2021 CADILLAC XT4
- 2018 to 2021 CADILLAC XT5
- 2020 to 2021 CADILLAC XT6
- 2019 to 2021 CHEVROLET BLAZER
- 2017 to 2019 CHEVROLET CRUZE
- 2018 to 2021 CHEVROLET EQUINOX
- 2017 to 2021 CHEVROLET MALIBU
- 2019 to 2021 CHEVROLET SILVERADO 1500
- 2018 to 2021 CHEVROLET TRAVERSE
- 2018 to 2021 GMC ACADIA
- 2019 to 2021 GMC SIERRA 1500
- 2018 to 2021 GMC TERRAIN

## Recalls for the same vehicles and component

- [21V346000](/recalls/nhtsa/21V346000.md), 2021-05-13: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE

## Other bulletins for the same vehicles and component

- [PIT5687A](/bulletins/10249954.md), 2024-02-12, Service bulletin: UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. This Preliminary information communicates some diagnostic tips to inspect for no/low voltage at the ECM for a customers complaints of a SES MIL, Crank No Start, stalling DTC's: P16A7 and/or P16AF.
- [PIP5628F](/bulletins/10236164.md), 2023-05-15, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 \- P0308 and/or P050D
- [PIP5895](/bulletins/10230704.md), 2023-01-30, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). This Preliminary information communicates to the technician the need to inspect connector for moisture intrusion at ECM, procedure for verification of need for replacement
- [N222372592](/bulletins/10228951.md), 2023-01-07, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). Service Update. Certain vehicles may have a condition in which ice or sludge can accumulate in the Charge Air Cooler \(CAC\) or Closed Crankcase Ventilation \(CCV\) system when driving in extremely cold weather conditions \(\-18°C \(0°F\) or less\). Dealers will install a radiator air front lower baffle and, if necessary, reprogram the Engine Control Module.
- [22NA036](/bulletins/10215763.md), 2022-07-18, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER:SENSOR/SENDING UNIT. Vehicle Odometer Not Matching Display after ECM, BCM or IPC Controller Replacement.
- [21NA113](/bulletins/10214207.md), 2022-06-21, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. This technical bulletin provides a procedure to perform a learn procedure for the turbo actuator.
- [20NA090](/bulletins/10214199.md), 2022-06-21, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. This informational bulletin provides a way for the technician to identify if the ECM has been modified.
- [PIE0703](/bulletins/10213717.md), 2022-06-10, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); ELECTRICAL SYSTEM. This engineering information \(EI\) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Intermittent No Start But Vehicle Has Power.
- [18348](/bulletins/10212584.md), 2022-05-31, Service bulletin: AIR BAGS; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); ELECTRICAL SYSTEM; EQUIPMENT. Service Update. Some vehicles may set DTC P189D and display SERVICE SHIFTER SEE OWNER?S MANUAL on the Driver Information Center \(DIC\). When this message is displayed, the vehicle will go into N \(Neutral\) once the vehicle?s speed is below 6 mph \(10 km/h\), and then into P \(Park\) once the vehicles speed goes below 3 mph \(5 km/h\). The customer will be able shift and drive the vehicle per instructions in the vehicle Owner?s Manual. Dealers are to reprogram the engine control module \(ECM\) with an updated software and calibration.
- [20NA197](/bulletins/10212562.md), 2022-05-31, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern.

JSON: [/v1/bulletins/10200140](/v1/bulletins/10200140)

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