Service bulletin 19NA244
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 | 10169319 |
| Published by NHTSA | 2019-12-16 |
| Manufacturer's number | 19NA244 |
| Manufacturer's date | 2019-11-01 |
| NHTSA component | ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM) |
NHTSA's summary
This informational bulletin provides information on a harsh 3-2 downshift during closed throttle coast when coming to a stop.
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, Transmission and driveline, Automatic transmission, Software, Transmission control module
| CHEVROLET SILVERADO 1500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| GMC SIERRA 1500 | 2019 (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.
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| PIP5853C | 2023-05-15. Service bulletin. This PI communicates to dealers and technicians a possible diode issue in the TCCM, and how to properly diagnose for a diode issue. |
| 16-NA-130 | 2023-03-08. Service bulletin. This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear. |
| 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. |
| PIP5621C | 2022-10-17. Service bulletin. This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC. |
| N182195380 | 2022-05-31. Service bulletin. Service Update. Certain vehicles equipped with a 10-speed transmission may have a condition where the downshift becomes firm after extended highway driving. |
| 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). |
| PIP5834 | 2022-03-14. Service bulletin. This Preliminary information communicates that the service 4wd message related to C119E is under investigation for a repair. |