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Service bulletin 18-NA-035

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10250248
Published by NHTSA2024-02-14
Manufacturer's number18-NA-035
Manufacturer's date2024-01-23
NHTSA componentPOWER TRAIN

NHTSA's summary

This service bulletin provides information on a normal characteristic of a transmission that will not shift into overdrive range during cold ambient temperatures.

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

Transmission and driveline

Vehicles listed
BUICK ENCORE2018, 2019, 2020, 2021, 2022
CADILLAC XT42019, 2020, 2021, 2022, 2023, 2024
CADILLAC XT52020, 2021, 2022, 2023, 2024
CADILLAC XT62020, 2021, 2022, 2023, 2024
CHEVROLET CRUZE2018, 2019
CHEVROLET EQUINOX2018, 2019, 2020, 2021, 2022, 2023, 2024
CHEVROLET MALIBU2018, 2019
CHEVROLET TRAX2018, 2019, 2020, 2021, 2022
GMC ACADIA2020, 2021, 2022, 2023
GMC TERRAIN2018, 2019, 2020, 2021, 2022, 2023, 2024
GMC TERRAIN NA2022 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
24V8390002024-11-07. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
20231422023-03-16. Powertrain
23V1720002023-03-16. POWER TRAIN:AUTOMATIC TRANSMISSION
23V0430002023-02-02. POWER TRAIN:DRIVELINE:DRIVESHAFT
20205202020-10-29. Powertrain
20V6680002020-10-29. POWER TRAIN:AUTOMATIC TRANSMISSION
17V5160002017-08-22. POWER TRAIN:DRIVELINE:DRIVESHAFT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
N252502890-012026-08-20. Service campaign. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the front electric drive transmission module.
N242471460-012026-08-20. Service campaign. Certain vehicles may have been built with an Electric Drive Unit mounting bolt that is too long, causing damage to the Drive Unit case. Dealers will inspect and replace the Electrical Drive Unit if necessary.
PI0281L2025-06-12. Service bulletin. This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
25-NA-0012025-04-14. Service bulletin. This service bulletin provides repair information to correct a customer concern of a transmission fluid leak.
19-NA-2002025-04-10. Service bulletin. This service bulletin provides a repair procedure to correct a customer concern of start/stop inoperative, MIL illuminated w/DTC P2797.
25-NA-0012025-03-14. Service bulletin. This service bulletin provides repair information to correct a customer concern of a transmission fluid leak.
PIP5981D2025-03-02. Service bulletin. This Preliminary information communicates ordering process for the front and rear drive units are on restriction for all listed EV vehicles for engineering review.
PIP5975A2025-03-02. Service bulletin. This Preliminary information communicates information on what dealer technicians should due if they encounter a broken chain on a CVT transmission
PIP5966A2025-03-02. Service bulletin. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement
PIP5966A2025-03-02. Service bulletin. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement