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Chevrolet Silverado 1500 HD Problems

Contamination of extended life coolant on Chevrolet Silverado 1500 HD

Problem Description and Possible Solution

Extended life coolant may become contaminated and require cooling system service before the recommended 100,000 miles.
(9 people reported this problem)

Chevrolet Silverado 1500 HD Vehicles With This Problem

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Average mileage: (–)
9 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007, 2008, 2009
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Brake problem? Or maybe a faulty head gasket cylinder?
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