WenmarOpen by Wenmar Pro

Service bulletin NTB21-117

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 id10206388
Published by NHTSA2022-01-08
Manufacturer's numberNTB21-117
Manufacturer's date2021-12-17
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:SEALS/GASKETS

NHTSA's summary

OIL LEAK AT REAR OF TRANSMISSION SERVICE INFORMATION When diagnosing an oil leak at the rear of the transmission on an applied vehicle, follow the SERVICE PROCEDURE in this bulletin to determine if the origin of the leak is at the rear extension seal, or at the pressed-in plug of the propeller shaft sleeve yoke (Figure 1).

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, Automatic transmission

Vehicles listed
NISSAN ARMADA2019, 2020, 2021

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