Engine Overheating Due to Broken Thermostat Housing on Chevrolet Lumina

On vehicles with a 3.1L engine, the front motor mount may break, causing the engine to jump while shifting gears or accelerating; this can break the water neck (thermostat housing) resulting in coolant loss and engine overheating.

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Average mileage: (–)
Engine affected: 3.1L V6
1 model year affected: 1999
1 person reported this problem
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Could it be a motor mount, or something in the gear shift itself.

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