Having problems with your 2011 GMC Acadia ?
Coolant leak causes engine overheat - 2011 GMC Acadia
You should get your engine's cooling system diagnosed. A cooling system pressure test and engine block test may be in order to correctly assess the situation. The engine in your vehicle is commonly known to have leaking water pump issues. If the engine has overheated multiple times, you may also need engine repairs (blown head gaskets) that can be diagnosed with an engine block test.
Repair Help & Product Troubleshooting for 2011 GMC Acadia
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