# Service bulletin 24\-NA\-009

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: 10249531
- Published by NHTSA: 2024\-02\-02
- Manufacturer's number: 24\-NA\-009
- Manufacturer's date: 2024\-01\-10
- NHTSA component: POWER TRAIN

## NHTSA's summary

This service bulletin advises the technician to replace valve body first to determine if that is the issue for and if not, to inspect internal parts of transmission for any signs of abnormal wear to correct customer concerns of Loss of Forward gear, slipping, MIL.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10249531-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10249531-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2020 to 2023 BUICK ENCORE GX
- 2019 to 2023 CHEVROLET MALIBU
- 2021 to 2023 CHEVROLET TRAILBLAZER

## Recalls for the same vehicles and component

- [2020520](/recalls/tc/2020520.md), 2020-10-29: Powertrain

## 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/10249531](/v1/bulletins/10249531)

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