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Service bulletin PG01601

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 id623011
Published by NHTSA2001-10-25
Manufacturer's numberPG01601
Manufacturer's date2001-08-31
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

SUBJECT REGARDING SOME STATE INSPECTION MAINTENANCE PROGRAMS REQUIRE A LOADED MODE TEST CONDUCTED ON A DYNAMOMETER. A LOADED MODE TEST USING A 2WD DYNAMOMETER CANNOT BE PERFORMED ON VEHICLES WITH FULL TIME FOR WHEEL DRIVE OR NON SWITCHABLE TRACTION CONTROL VEHICLES. *ET

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Automatic transmission, Transmission control module

Vehicles listed
TOYOTA TOYOTA TRUCK2001

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