oil in coolant resevior on 2001 Chevrolet Monte Carlo

I have oil in my coolant resivior. What could that mean?

1 answer
The lower portion of your radiator might have a built in transmission cooler and it could be leaking trans fluid into the radiator itself and you can find a shop here http://repairpal.com/directory?address=75104&car_brand_names=Chevrolet and check radiator replacement cost here http://repairpal.com/estimator?car_type_id=3065