# Service bulletin 20NA237

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: 10187429
- Published by NHTSA: 2021\-02\-22
- Manufacturer's number: 20NA237
- Manufacturer's date: 2020\-12\-23
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

## NHTSA's summary

This service bulletin provides V152 radio software update information to correct customer concerns of various software issues.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10187429-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10187429-9999.pdf)

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

## Components

Electrical system, Equipment and accessories, Software

## Vehicles listed

- 2021 BUICK ENCORE GX
- 2021 BUICK ENVISION
- 2021 CADILLAC CT4
- 2021 CADILLAC CT5
- 2021 CADILLAC XT4
- 2021 CADILLAC XT5
- 2021 CADILLAC XT6
- 2021 CHEVROLET BLAZER
- 2021 CHEVROLET CAMARO
- 2021 CHEVROLET CORVETTE
- 2021 CHEVROLET MALIBU
- 2021 CHEVROLET SILVERADO 1500
- 2021 CHEVROLET SUBURBAN
- 2021 CHEVROLET TAHOE
- 2021 CHEVROLET TRAILBLAZER
- 2021 GMC ACADIA
- 2021 GMC SIERRA 1500
- 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

## Other bulletins for the same vehicles and component

- [24\-NA\-066](/bulletins/10252993.md), 2024-04-10, Service bulletin: AIR BAGS; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE:SOFTWARE. This service bulletin provides repair information for technicians that may be Unable to Complete Serial Data Authentication on the vehicle.
- [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.
- [N23\-241027](/bulletins/10241227.md), 2023-08-25, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM:SOFTWARE; SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. '\(There may be future updates under this same release number.\) Your Buick Envision keeps getting better. This software update includes the following, if your vehicle is equipped: Refinements: •Updates made to improve the Automated Heated Seat functionality. •Updates made to the overall vehicle software update process. •Updates made to improve connectivity within Apple CarPlay. •A variety of other minor software updates to make your driving and in\-vehicle experience better. Better Never Stops™
- [N23\-241156](/bulletins/10240451.md), 2023-08-04, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. '\(There may be future updates under this same release number.\) Your vehicle keeps getting better. This vehicle software update includes the following: Refinements: •Updates made to the overall vehicle software update process. Better Never Stops™
- [N23\-241010](/bulletins/10237985.md), 2023-06-24, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. \(There may be future updates under this same release number.\) Your Chevrolet Corvette keeps getting better. This vehicle software update includes the following: Refinements: Updates made to the overall vehicle software update process. Better Never Stops™
- [N23\-241010](/bulletins/10237984.md), 2023-06-24, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. \(There may be future updates under this same release number.\) Your Chevrolet Corvette keeps getting better. This vehicle software update includes the following: Refinements: Updates made to the overall vehicle software update process. Updates made to the air conditioning system to maintain consistent cooling performance. Updates made to the radio display graphics and audio connectivity while using OnStar \& SiriusXM. Updates made to the headlamp functionality to improve the ease of use. A variety of other minor software updates to make your driving and in\-vehicle experience better. Better Never Stops™
- [PIT5762F](/bulletins/10231623.md), 2023-02-13, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates an issues with false codes setting in vehicles due to timing issues between the modules.
- [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.

JSON: [/v1/bulletins/10187429](/v1/bulletins/10187429)

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