Where is the plug for the engine coolant heater on a 2007 gmc envoy?

The engine coolant heater plug for a 2007 GMC Envoy is typically located near the front of the engine, often on the passenger side. It usually protrudes from the engine block or is found near the radiator hose. You may need to look for a cord that leads to a standard electrical plug, which can be connected to a power source to keep the coolant warm in colder climates. Always refer to the vehicle's owner's manual for specific details regarding your model.