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July 1, 2014 Service bulletin

Various Engine Noises During Cold Start and Warm Engine Operation

Chevrolet technical service bulletin 140604004B for 2014-2015 Chevrolet Silverado 1500, 2015 Chevrolet Tahoe and 2014-2015 GMC Sierra 1500 and others.

Bulletin number
140604004B
Component
Engine and engine cooling
Summary
Various Engine Noises During Cold Start and Warm Engine Operation

Owners of these vehicles have filed 708 complaints in the engine category.

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