Hi there,
The most common place for a transmission oil leak is the pan gasket, rear seal or front torque converter seal, oil cooler lines can also leak, you may be getting this message as the trans oil may be getting low, have you check it yet? As for cost we need to know where the leak is on the trans, a wash down and inspection after a short drive will show up any fresh leaks, or a mechanic can advise on where the leak is, then we can give you a better idea as to any costs.
Mark (mhpautos)
Friday, July 23rd, 2010 AT 9:24 AM