Service bulletin 20NA090
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 | 10214199 |
| Published by NHTSA | 2022-06-21 |
| Manufacturer's number | 20NA090 |
| Manufacturer's date | 2022-01-24 |
| NHTSA component | EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE |
NHTSA's summary
This informational bulletin provides a way for the technician to identify if the ECM has been modified.
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
Engine, Equipment and accessories, Engine control module
| CADILLAC ESCALADE | 2020 |
|---|---|
| CADILLAC ESCALADE | 2022 |
| CADILLAC ESCALADE ESV | 2020, 2021, 2022 |
| CADILLAC ESCALADE NA | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET 3500 | 2021 |
| CHEVROLET 3500 | 2022 |
| CHEVROLET 5500HD | 2021, 2022 |
| CHEVROLET 6500HD | 2022 |
| CHEVROLET SILVERADO 1500 | 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 4500 | 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2020, 2021, 2022 |
| CHEVROLET TAHOE | 2020, 2021, 2022 |
| GMC SIERRA 1500 | 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2020, 2021, 2022 |
| GMC YUKON XL | 2020, 2021, 2022 |
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. |
|---|---|
| N222383020 | 2023-07-25. Service bulletin. Service Update: Certain vehicles may have an Engine Control Module that does not properly respond to certain service tool requests for the datafile CALID (part number) and CVN (checksum). This condition may cause a vehicle to fail an emissions Inspection/Maintenance (I/M) test. Dealers are to reprogram the Engine Control Module. |
| 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 |
| N212351211 | 2023-03-08. Service bulletin. General Motors has decided to conduct a voluntary emissions recall involving certain vehicles, equipped with a diesel engine. The Engine Control Module (ECM) may not properly detect faults, set DTCs or illuminate the Malfunction Indicator Light (Check Engine Light) if these fault conditions occur: •Charge Air Cooler (CAC) low efficiency (DTC P026A) •Exhaust Gas Recirculation (EGR) cooler low efficiency (DTC P2457) •NOx sensor position 1 slow response (DTC P22F9) Dealers are to reprogram the Engine Control Module (ECM) with corrected software. |
| N212355140 | 2023-01-24. Service bulletin. Service Update Bulletin - Certain vehicles may have a condition where the engine control module has an incorrect calibration. Dealers are to reprogram the engine control module. |
| 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. |
| 20NA228 | 2022-05-31. Service bulletin. This technical bulletin provides a procedure to replace the fuel filter and perform a filter life procedure if found the reason for a failed fuel filter life reset during ECM transfer of data. |
| 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. |
| 20NA189 | 2022-05-31. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Transmission Control Module Offline Event. |