# Service bulletin 19NA216

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: 10166658
- Published by NHTSA: 2019\-10\-28
- Manufacturer's number: 19NA216
- Manufacturer's date: 2019\-09\-30
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION

## NHTSA's summary

This technical bulletin provides the tech with a procedure to check the t\-case for loose fasteners and to re\-torque if the cause of the concern.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10166658-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10166658-9999.pdf)

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

## Components

Transmission and driveline, Automatic transmission

## Vehicles listed

- 2020 CHEVROLET SILVERADO 2500
- 2020 GMC SIERRA 2500

## Recalls for the same vehicles and component

- [26V083000](/recalls/nhtsa/26V083000.md), 2026-02-12: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY
- [24V797000](/recalls/nhtsa/24V797000.md), 2024-10-24: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE

## Other bulletins for the same vehicles and component

- [17\-NA\-066](/bulletins/10239647.md), 2023-07-25, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test.
- [PIP5926A](/bulletins/10239164.md), 2023-07-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. This Preliminary information communicates that the t\-case input seal, and/or the o\-ring most likely is the source of the leak between the transmission and the t\-case.
- [PIP5853C](/bulletins/10236142.md), 2023-05-15, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). 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](/bulletins/10232711.md), 2023-03-08, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY. This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear.
- [PIP5621C](/bulletins/10224285.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN. 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.
- [N222376590](/bulletins/10217003.md), 2022-08-02, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Service Update \- certain vehicles may have a transmission control module that may not have been correctly programmed. Dealers are to reprogram the transmission control module.
- [22NA022](/bulletins/10214239.md), 2022-06-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:SEALS/GASKETS. This Informational bulletin advises the technician of a possible oil leak at the front cover and how to diagnose it to verify if it is coming from the seal or not.
- [21NA214](/bulletins/10214230.md), 2022-06-21, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. This technical bulletin provides repair information to correct a customer concern of Service Engine Soon Lamp being illuminated. They may also comment on multiple transmission issues including harsh or delayed shifts, slip, surge, shudder, noise, whine, growl, shake and/or vibration. As well as the exhaust brake not working or that they do not feel it. Technicians may find DTCs P2002, P2463, P2459, P144E, P0421, P0422, P0106 P20EE, P129F, P16F3, P20FF, P226D, P249D, P249E, P11CC and / or P11D5.
- [21NA214](/bulletins/10214212.md), 2022-06-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT; ENGINE AND ENGINE COOLING. This technical bulletin provides repair information to correct a customer concern of Service Engine Soon Lamp Illuminated, Harsh or Delayed Transmission Shifts Including Slip, Surge, Shudder, Noise, Whine, Growl, Shake and/or Vibration, DTCs P2002, P2463, P2459, P144E, P0421, P0422, P0106 and/or P20EE Set Current or in Recent History.
- [N212354170\-02](/bulletins/10210499.md), 2022-04-26, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. Emission Recall \- General Motors has decided to conduct a Voluntary Emissions Recall to improve the operation of the regeneration cycle on certain 2020 Chevrolet Silverado and GMC Sierra vehicles with a 6.6L diesel engine. The recall will address that currently under certain operating conditions, higher than necessary temperatures may be used to clean the Diesel Particulate Filter \(DPF\) during the regeneration cycle. Dealers are to reprogram the Engine Control Module \(ECM\) and Transmission Control Module \(TCM\).

JSON: [/v1/bulletins/10166658](/v1/bulletins/10166658)

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