Now I've got a coolant leak somewhere and I can't find it. I replaced my PHH yesterday. I looked all around in that area and don't see any evidence. It's a pretty steady drip, drip, drip and it's coming off the tranny pan. It's red and I'm sure it's coolant. I used the red lined silicone heater hose, but not constant tension clamps for my PHH replacement. I suppose it's possible it's a "cold" leak at the block. Maybe if I tighten the clamps a little more? What else could it be? Could I have cracked a rear heater hose when I back flushed the system? I just can't see where it's coming from. If it is the rear heater hoses, how do you get to them, from inside the vehicle? Any help would be appreciated.