The first thing I'd recommend is to check the Transmission Fluid level to make sure it isn't OVER FULL. My son, bless his heart, was using my 2005 Sebring, and checked the transmission fluid, without the motor running with the car in Park. He saw that the fluid level was low and put more fluid in it. However, to properly check the transmission fluid level, on an automatic, the car has to be running and in Park. This way, will raise the fluid level on the stick to the correct reading. When my son put the extra fluid in it, now my level reads way too full when running. I have to drain it out, cause it leaks out all over the place when the car is parked in the driveway. Just a thought that might save you a very expensive trip to the mechanic. If you take it into a shop, no matter what the problem, they'll be sure to "find" all sorts of scarey things wrong with your transmission. The Chrysler dealer here did mine and told me my transmission was shot and only had about 5,000 miles left on it at the most. I checked the fluid the right way myself and have over 25,000 on the "shot transmission" and still running strong.
Yes.
The most common leak points are the cooler hoses and the axle shaft seals.
It can.
Yea but the trunks leak
Could be low on transmission fluid. If so you have a heck-of-an oil leak.
The condensate drain is plugged.
Any stop leak additive is always a bad idea. If you do add it, make sure the fluid level is correct when done.
At the heater core itself.
It requires replacing the head gasket.
probably the coolant tube under the manifold. it is only available from the dealer
NO. Your transmission leak has nothing to do with hard starting. Have you replaced the spark plugs & plug wires?
You will need to have the leak fixed.