# Service bulletin 20NA199

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: 10184493
- Published by NHTSA: 2020\-12\-21
- Manufacturer's number: 20NA199
- Manufacturer's date: 2020\-11\-09
- NHTSA component: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

This technical bulletin provides programming information for Radio Software Version U150 Update to correct software issues on infotainment systems IOS, IOT or IOU.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184493-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184493-9999.pdf)

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

## Components

Electrical system, Equipment and accessories, Software

## Vehicles listed

- 2020 BUICK ENCLAVE
- 2020 BUICK ENCORE GX
- 2020 CADILLAC XT4
- 2020 CADILLAC XT5
- 2020 CADILLAC XT6
- 2020 CHEVROLET BLAZER
- 2020 CHEVROLET CAMARO
- 2020 CHEVROLET SILVERADO 1500
- 2020 CHEVROLET SILVERADO 2500
- 2020 CHEVROLET TRAVERSE
- 2020 GMC ACADIA
- 2020 GMC SIERRA 1500
- 2020 GMC SIERRA 2500

## Other bulletins for the same vehicles and component

- [PIT5954C](/bulletins/10253085.md), 2024-04-15, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates a Radio software update resolution for OnStar LED Red And Wifi Hotspot Inoperative After Remote Vehicle Start concern.
- [20\-NA\-132](/bulletins/10252774.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- [PIT5839C](/bulletins/10231612.md), 2023-02-13, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates to GM dealers that the above mentioned concern is software related and that General Motors is working on a solution.
- [PIP5632G](/bulletins/10230683.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
- [PIP4902Q](/bulletins/10230682.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
- [PIP5814](/bulletins/10230680.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary information communicates that there some service parts released to dealers missing software.
- [21NA127](/bulletins/10214208.md), 2022-06-21, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides repair information to correct a customer concern of Head Up Display \(HUD\) Blank, Non\-Responsive to Brightness, Aim, or Page Controls, DTC U1518 Set.
- [22\-NA\-075](/bulletins/10210283.md), 2022-04-15, Service bulletin: ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides repair information to correct a customer concern of software anomalies with the engine control module \(ECM\).
- [21NA256](/bulletins/10207916.md), 2022-02-14, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); EXTERIOR LIGHTING. This service bulletin provides repair information for dealers/technicians to correct a customer concern of a Malfunction Indicator Lamp Illuminated with DTC P26BB Set.
- [N212342980\-01](/bulletins/10207646.md), 2022-02-04, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, DIESEL. Service Update. On certain vehicles equipped with a 6.6L diesel engine \(RPO L5P\), the DEF tank connector may overheat and set the following diagnostic codes \(P10D9, P143C and P10F3\), which will result in reduced engine speed. Dealers are to reprogram the reductant control module.

JSON: [/v1/bulletins/10184493](/v1/bulletins/10184493)

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