# Service bulletin 21\-NA\-169

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: 10210286
- Published by NHTSA: 2022\-04\-15
- Manufacturer's number: 21\-NA\-169
- Manufacturer's date: 2022\-04\-07
- NHTSA component: POWER TRAIN

## NHTSA's summary

This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10210286-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10210286-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2020 to 2022 BUICK ENCORE GX
- 2020 to 2022 BUICK ENVISION
- 2020 BUICK REGAL
- 2020 to 2022 CADILLAC XT4
- 2020 to 2022 CADILLAC XT5
- 2020 to 2022 CADILLAC XT6
- 2020 to 2022 CHEVROLET BLAZER
- 2020 CHEVROLET EQUINOX
- 2020 to 2022 CHEVROLET MALIBU
- 2021 to 2022 CHEVROLET TRAILBLAZER
- 2020 to 2022 GMC ACADIA
- 2020 to 2022 GMC TERRAIN
- 2022 GMC TERRAIN NA

## Recalls for the same vehicles and component

- [23V172000](/recalls/nhtsa/23V172000.md), 2023-03-16: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2020520](/recalls/tc/2020520.md), 2020-10-29: Powertrain
- [20V668000](/recalls/nhtsa/20V668000.md), 2020-10-29: POWER TRAIN:AUTOMATIC TRANSMISSION

## Other bulletins for the same vehicles and component

- [23\-NA\-119](/bulletins/11024331.md), 2025-10-16, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. This service bulletin provides service procedure information to correct a customer concern of Shift to Park Displayed on DIC When Vehicle is in\- Park, No Start \- DTC B000A Set.
- [PI0281L](/bulletins/11019516.md), 2025-06-12, Service bulletin: STEERING; POWER TRAIN; SUSPENSION. This preliminary informational \(PI\) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- [19\-NA\-200](/bulletins/11016943.md), 2025-04-10, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. This service bulletin provides a repair procedure to correct a customer concern of start/stop inoperative, MIL illuminated w/DTC P2797.
- [PIP6036A](/bulletins/11016668.md), 2025-04-07, Service bulletin: POWER TRAIN. This Preliminary information communicates diagnostic aids for a surge or fishbite concern
- [PIP5975A](/bulletins/11014630.md), 2025-03-02, Service bulletin: POWER TRAIN. This Preliminary information communicates information on what dealer technicians should due if they encounter a broken chain on a CVT transmission
- [PIP6032A](/bulletins/11013399.md), 2025-02-03, Service bulletin: POWER TRAIN. This Preliminary Information communication advises the technician on possible sources of transmission fluid leaks from the transmission oil filter or cooler line seals .
- [21\-NA\-293](/bulletins/11013244.md), 2025-01-30, Service bulletin: ENGINE; POWER TRAIN; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Poor Engine Performance in Extremely Cold Weather Conditions, Charge Air Cooler Icing \- Malfunction Indicator Lamp \(MIL\) Illuminated, DTC P0299, P0234, P0236, P00C7 Set.
- [09\-06\-04\-026Z](/bulletins/11013069.md), 2025-01-23, Service bulletin: ENGINE; POWER TRAIN; ELECTRICAL SYSTEM. This bulletin provides information on identifying Non\-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- [PIP6036](/bulletins/11012945.md), 2025-01-20, Service bulletin: POWER TRAIN. This Preliminary information communicates diagnostic aids for a surge or fishbite concern
- [08\-07\-30\-035I](/bulletins/11011989.md), 2024-12-19, Service bulletin: POWER TRAIN. This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.

JSON: [/v1/bulletins/10210286](/v1/bulletins/10210286)

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