Owners of 2005-06 Jeep Grand Cherokees and 2006 Commanders with 3.0L and 5.7L engines-all built before Oct. 29, 2005-may complain of a whining sound from the power steering system on initial start-up. Chrysler Group LLC. said the noise is most prevalent when the outside temperature is below freezing, increases in intensity the colder the temperature gets and usually disappears as the engine warms up. Poor fluid flow through the remote-mounted power steering reservoir is the most likely cause for the noise, according to the auto maker. Installing an updated reservoir with improved flow characteristics, part No. 52124317AA, should eliminate further noise issues.
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