This bulletin applies to 2007-2013 GMC Yukon and Denali vehicles. A power steering fluid leak may be found from the power steering hose connection at the steering rack.
Some owners of 2011 Buick Regal vehicles equipped with a 2.4L engine may complain of an engine oil leak that appeared in extremely cold ambient temperatures (generally 0 degrees Fahrenheit or colder). They may also comment that they heard a single “pop” noise immediately before the oil leak started.
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