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October 1, 2010 Service bulletin

Gm: there may be an engine coolant leak or knock noise

Chevrolet technical service bulletin PIE-0129 for 2006-2007 Chevrolet Kodiak, 2006-2007 Chevrolet C5500 and 2006-2007 Chevrolet C4500 and others.

Bulletin number
PIE-0129
Component
Engine and engine cooling
Summary
Gm: there may be an engine coolant leak or knock noise. There could be an engine cooling fan break. Rm

Owners of these vehicles have filed 14 complaints in the engine category.

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