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
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system, Engine, Software
| CHEVROLET SILVERADO 1500 | 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| CHEVROLET SILVERADO 2500 | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA DENALI | 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 20-NA-132 | 2024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements. |
|---|---|
| PIP5632G | 2023-01-30. Service bulletin. 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 | 2023-01-30. Service bulletin. 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 | 2022-04-15. Service bulletin. This technical bulletin provides repair information to correct a customer concern of software anomalies with the engine control module (ECM). |
| 21NA256 | 2022-02-14. Service bulletin. 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 | 2021-12-27. Service bulletin. This service bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808. |
| 17419 | 2021-04-30. Service bulletin. 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 | 2021-03-01. Service bulletin. 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 | 2021-02-01. Service bulletin. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares. |
| 20NA171 | 2020-10-26. Service bulletin. This technical bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808. |