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Service bulletin 26-032

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 id10168702
Published by NHTSA2019-12-04
Manufacturer's number26-032
Manufacturer's date2019-11-07
NHTSA componentPOWER TRAIN; ENGINE AND ENGINE COOLING

NHTSA's summary

Non-Safety Campaign: New transmission calibrations are available to reduce overspeed errors that occur during downshifts.

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

Engine, Transmission and driveline

Vehicles listed
PACCAR TRANSMISSION

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