- Coolant Leaking Into Engine Oil 9 complaints at an average of 89,097 miles in the 2003 Pontiac Montana.
- Overheats 9 complaints at an average of 117,031 miles in the 2002 Pontiac Montana.
- Leaking Coolant, Intake Manifold Gasket Failure 20 complaints at an average of 112,226 miles in the 2000 Pontiac Montana.
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