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Service bulletin 9906

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 id604491
Published by NHTSA1999-05-04
Manufacturer's number9906
Manufacturer's date1999-02-17
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

SERVICE ACTION REGARDING ETHYLENE GLYCOL CONCENTRATION TOO LOW IN ENGINE COOLANT MIXTURE. *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
DODGE DAKOTA1999
DODGE RAM1999

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

Other bulletins for the same vehicles and component
0709981999-02-02. Service bulletin. SUBJECT ON VISCOUS FAN DRIVE SERVICE. *YC
0708981999-02-02. Service bulletin. CONDITIONS WITH DIESEL ENGINE OVERHEATING. *YC
0705981998-11-04. Service bulletin. EXPERIENCING ENGINE COOLING FAN NOISES. *YC