Originally Posted by ShawnQ

For the trans, get under the car (after it is safely supported by jack stands or ramps) and look at the transmission. Look for any red fluid coming out of it. Usually when they leak, they drip - so you'll see it on your driveway or garage floor. It is a clear-red color like cherry cough medicine.

As for the oil leak, they are usually located at the front (closest to bumper) of the drivers side valve cover around where the valve cover meets the oil fill cap and/or where the valve cover gasket sticks out (look down towards the exhaust manifold).