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Service bulletin 2591

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 id10011623
Published by NHTSA2005-01-27
Manufacturer's number2591
Manufacturer's date2004-12-02
Replaces2591R
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

T-BOLT CONSTANT TORQUE CLAMPS. VEHICLES BUILT AFTER APRIL 1, 1990. PETERBILT. *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, Cooling system

Vehicles listed
UNKNOWN UNKNOWN

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