This bulletin applies to 2016-2018 Chevy Corvettes equipped with a 6.2L LT1/LT4 engine. The vehicle may have a concern with coolant loss and/or coolant odor. If the coolant is low, pressure test the cooling system to check for leaks at the outer cylinder head bolts.
According to GM, if a leak is found at one or more cylinder head bolt locations, the cylinder head should be replaced.
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