No way to tell… at least, not yet. Not until the problem has been checked thoroughly by a qualified technician. After performing those tests, a technician will be able to tell you whether you’re dealing with a problem inside the transmission. Or a possible problem in the vehicle systems that control transmission operation.
But then he’ll be able to give you a price, right? Well, no… not completely. If the problem is in the computer system, the technician will probably have to perform additional diagnosis. This will identify the specific cause of the problem. That may take a half hour, or may take a few hours, depending on the problem. Once he’s identified the specific problem, the shop would be able to give you an accurate estimate of the cost to fix your car.
If the problem is inside the transmission, the shop may be able to give you a rebuild price based on the type of transmission and the transmission repair option you choose. If your preference is a custom-rebuilt transmission they’ll need to disassemble and inspect the transmission in order to give you a firm price.
The good news is that the vast majority of transmission problems that come into the shop these days don’t actually end up needing a new transmission. The repairs may end up costing less than 25% of the price of a rebuilt transmission.
The important thing is to take your car to a qualified transmission repair shop. There they can diagnose your transmission problem accurately, so you don’t end up paying for work you don’t really need. The ATRA Code of Ethics — which all ATRA members are bound by — dictates that ATRA members provide competent, quality diagnosis and repairs at an honest price.