Have a coolant Leak by my alternator

Hey, my name is Dusty, and I'm one of the auto experts on RepairPal's Car Genius team. I'm here to help! Unless you've had trouble recently with your GX overheating or performing poorly, I suspect this is just the water pump leaking. The coolant leaves behind a residue that gets baked on with the heat from the engine. The timing belt will need to be removed to replace the water pump, so if you haven't had that replaced recently (Toyota recommends replacement at 90k intervals), now is a good time. It's also a good idea to have the remainder of the timing belt components (as well as the serpentine belt and associated components) checked and replaced if they're found to be suspect. If you have any other questions or would like help with finding a RepairPal Certified shop in your area, give us a call! 877-913-1554