Service bulletin 20NA161
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 | 10184491 |
| Published by NHTSA | 2020-12-21 |
| Manufacturer's number | 20NA161 |
| Manufacturer's date | 2020-11-30 |
| NHTSA component | SERVICE BRAKES; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM) |
NHTSA's summary
This informational bulletin advises the technician to check for a possible stuck oil pressure relief valve.
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
Brakes, Engine, Engine control module
| CHEVROLET 3500 | 2019 |
|---|---|
| CHEVROLET 4500HD | 2019 |
| CHEVROLET EXPRESS | 2019, 2020 |
| CHEVROLET SILVERADO 2500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2019 |
| GMC SAVANA | 2019, 2020 |
| GMC SIERRA 2500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 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.
| 21V346000 | 2021-05-13. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE |
|---|
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| PIT5687A | 2024-02-12. Service bulletin. This Preliminary information communicates some diagnostic tips to inspect for no/low voltage at the ECM for a customers complaints of a SES MIL, Crank No Start, stalling DTC's: P16A7 and/or P16AF. |
|---|---|
| PIP5628F | 2023-05-15. Service bulletin. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D |
| N222372592 | 2023-01-07. Service bulletin. Service Update. Certain vehicles may have a condition in which ice or sludge can accumulate in the Charge Air Cooler (CAC) or Closed Crankcase Ventilation (CCV) system when driving in extremely cold weather conditions (-18°C (0°F) or less). Dealers will install a radiator air front lower baffle and, if necessary, reprogram the Engine Control Module. |
| 21NA113 | 2022-06-21. Service bulletin. This technical bulletin provides a procedure to perform a learn procedure for the turbo actuator. |
| 20NA090 | 2022-06-21. Service bulletin. This informational bulletin provides a way for the technician to identify if the ECM has been modified. |
| 16NA325 | 2022-05-31. Service bulletin. This technical bulletin provides a procedure on how to properly identify if there is any aftermarket calibrations loaded on the ECM or and detection of a power up hardware installed. |
| 20NA197 | 2022-05-31. Service bulletin. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern. |
| 17NA050 | 2022-05-31. Service bulletin. This informational bulletin explains how a health report is required when doing repairs on LCF vehicles. |
| 21NA257 | 2022-02-14. Service bulletin. This service bulletin provides a service procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3075 Set. |
| 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. |