# Service bulletin 20NA181

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: 10181707
- Published by NHTSA: 2020\-10\-26
- Manufacturer's number: 20NA181
- Manufacturer's date: 2020\-09\-22
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING

## NHTSA's summary

This technical bulletin provides a procedure to program the ECM if found the cause of the customers complaint.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181707-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181707-9999.pdf)

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

## Components

Electrical system, Engine, Software

## Vehicles listed

- 2017 to 2018 CHEVROLET SILVERADO 1500
- 2017 to 2019 CHEVROLET SILVERADO 2500
- 2018 to 2019 CHEVROLET SILVERADO 3500
- 2017 to 2019 GMC SIERRA 2500
- 2017 to 2018 GMC SIERRA DENALI

## Other bulletins for the same vehicles and component

- [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.
- [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.
- [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.
- [20NA171](/bulletins/10205543.md), 2021-12-27, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. This service bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.
- [17419](/bulletins/10191076.md), 2021-04-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Condition Certain 2018 model year Chevrolet Silverado HD and GMC Sierra HD vehicles, equipped with 6.6L diesel engine \(RPO L5P\) and Allison transmission \(RPO MW7\), may have a condition in which the automatic transmission has rough upshifts. Correction Reprogram the transmission control module \(TCM\).
- [21NA010](/bulletins/10187773.md), 2021-03-01, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides a procedure to reset the DTCs and take the vehicle for a test drive to verify the codes do not return.
- [16NA019](/bulletins/10186058.md), 2021-02-01, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
- [20NA171](/bulletins/10181701.md), 2020-10-26, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This technical bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.

JSON: [/v1/bulletins/10181707](/v1/bulletins/10181707)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2020NA181&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10181707&vehicle=Service%20bulletin%2020NA181)