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Service bulletin 000604047

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 id617721
Published by NHTSA2001-03-24
Manufacturer's number000604047
Manufacturer's date2000-11-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE

NHTSA's summary

SOME MEDIUM DUTY MODELS WITH 3126 CATERPILLAR DIESEL ENGINE AND ALLISON AUTOMATIC TRANSMISSION MAY EXHIBIT AN ENGINE SPEED POWER TAKEOFF (PTO) OPERATION RETURNING TO IDLE FOR NO APPARENT REASON. *TT

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

Engine

Vehicles listed
CHEVROLET C65001998 to 2001
CHEVROLET C75001998 to 2001
GMC C65001998 to 2001
GMC C75001998 to 2001

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