# Service bulletin 21NA113

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: 10214207
- Published by NHTSA: 2022\-06\-21
- Manufacturer's number: 21NA113
- Manufacturer's date: 2022\-01\-10
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE

## NHTSA's summary

This technical bulletin provides a procedure to perform a learn procedure for the turbo actuator.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214207-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10214207-9999.pdf)

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

## Components

Electrical system, Engine, Engine control module, Turbocharger or supercharger

## Vehicles listed

- 2019 CHEVROLET 3500
- 2020 CHEVROLET 3500
- 2020 CHEVROLET 5500HD
- 2019 CHEVROLET 6500
- 2017 to 2018 CHEVROLET SILVERADO 1500
- 2017 to 2022 CHEVROLET SILVERADO 2500
- 2019 to 2022 CHEVROLET SILVERADO 4500
- 2019 CHEVROLET SILVERADO 6500
- 2017 to 2022 GMC SIERRA 2500
- 2019 to 2020 GMC SIERRA 3500
- 2017 to 2018 GMC SIERRA DENALI

## Recalls for the same vehicles and component

- [21V346000](/recalls/nhtsa/21V346000.md), 2021-05-13: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE

## Other bulletins for the same vehicles and component

- [PIT5687A](/bulletins/10249954.md), 2024-02-12, Service bulletin: UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. 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](/bulletins/10239619.md), 2023-07-25, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); POWER TRAIN. 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](/bulletins/10236164.md), 2023-05-15, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). 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](/bulletins/10232696.md), 2023-03-08, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). 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.
- [N222372592](/bulletins/10228951.md), 2023-01-07, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). 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.
- [22NA037](/bulletins/10215764.md), 2022-07-18, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ELECTRICAL SYSTEM. Engine Control Module Update.
- [20NA090](/bulletins/10214199.md), 2022-06-21, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE. This informational bulletin provides a way for the technician to identify if the ECM has been modified.
- [22NA021](/bulletins/10212636.md), 2022-05-31, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This informational bulletin advises the tech of a possible loose bolts at the turbo actuator and to replace turbo if the bolts have been found loose.
- [N182179090](/bulletins/10212574.md), 2022-05-31, Service bulletin: FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\). Service Update. Certain vehicles may have one or multiple DTCs that are incorrectly illuminating the service engine soon \(SES\) light. Hardware including fuel injectors and exhaust gas recirculation \(EGR\) valves may have been used to fix this issue, however, the condition could return after these repairs were made. There is no effect for vehicle performance.
- [20NA197](/bulletins/10212562.md), 2022-05-31, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\); BACK OVER PREVENTION; SERVICE BRAKES, HYDRAULIC. This technical bulletin provides a procedure to inspect and repair the fuel pressure sensor if found the cause of the customers concern.

JSON: [/v1/bulletins/10214207](/v1/bulletins/10214207)

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