* Water Pump: This is the most common cause. The water pump's shaft seal can wear out, allowing coolant to leak out. Since it's located right behind the balancer, a leak would appear to come from that area.
* Cracked Engine Block or Freeze Plug: Less common, but possible. A crack in the block itself near the water jacket, or a failed freeze plug in that area, could leak coolant. This is a more serious issue.
* Intake Manifold Gasket: While less likely to manifest *specifically* behind the balancer, a leak from a damaged intake manifold gasket could sometimes drip down and appear to be originating from there.
* Oil Cooler (if equipped): Some 1995 GTs might have an oil cooler. A leak in the cooler or its seals could mix with coolant, though it's usually more likely to show up as oil contamination rather than just coolant.
Why it's hard to pinpoint:
The location makes visual inspection difficult. The harmonic balancer obstructs a direct view.
What to do:
1. Careful Visual Inspection: Try to clean the area thoroughly, then run the engine briefly (with proper safety precautions!) and observe carefully where the leak *actually* originates. Use a flashlight and maybe even a mirror.
2. Pressure Test: A coolant system pressure test is crucial. This pressurizes the system to reveal leaks that might not be readily apparent. A mechanic can easily perform this.
3. Professional Diagnosis: Given the difficulty of accessing the area, it's highly recommended to take it to a mechanic familiar with these cars. They have the tools and experience to diagnose the problem accurately and avoid further damage.
Important Note: Driving with a coolant leak is dangerous. Low coolant can lead to overheating, which can cause severe engine damage. Get this fixed as soon as possible.