What would cause a slow coolant leak on backside of the motor slightly to drivers side with cold fluid when engine is hot 97 catera?

1. Water pump gasket failure: The water pump gasket can become worn or damaged, allowing coolant to leak from the backside of the engine. This is a common cause of coolant leaks in the Catera.

2. Intake manifold gasket failure: The intake manifold gasket can also become worn or damaged, allowing coolant to leak from the backside of the engine.

3. Heater core: A leak in the heater core itself is another possibility, especially if the leak is on the driver’s side of the vehicle. Heater core leaks can be difficult to diagnose as the coolant may only leak into the cabin when the heater is on.

4. Head gasket failure: A head gasket failure can cause coolant to leak from the backside of the engine. This is a serious issue that can lead to engine damage.

5. Freeze plugs: Finally, freeze plugs (also called core plugs) can leak if they become damaged or corroded. Freeze plugs are located throughout the engine and are designed to prevent the engine block from cracking in freezing temperatures.