This bulletin applies to 2016-2018 Chevy Corvettes equipped with a 6.2L LT1 or LT4 engine. A vehicle may have a concern with coolant loss and/or coolant odor after driving the vehicle.

If the coolant is low, pressure test the system looking for leaks at the outer head bolts.

If a leak is found, the cylinder head with the leak should be replaced.

Inspect the outer cylinder head bolt locations for signs of coolant leaks.

Inspect the outer cylinder head bolt locations for signs of coolant leaks.

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