It depends on the car, drivetrain type (front or rear wheel, 4x4's), and transmission type. Taking apart an automatic transmission is a substantially more difficult task than taking apart a manual. Other than that, a good and decent mechanic or knowledgable friend can tell you what is wrong most of the time by driving it. Usually msot transmission problems present themselves when your car drives differently. Does it slip? Shift easy or hard? To simply remove a transmission is labor intensive, around two to three hours of labor depending on the drivetrain. Regardless of transmission type, the difficulty of removal is rear wheel drive, front wheel drive, then 4x4, from least to greatest. Your best bet is to take your car to a good shop and I personally recommend one that specializes in transmissions. A diagnostic shouldn't cost more than 1 hour of labor in my opinion, but hopefully you can get an answer with a diagnostic being performed and your transmission not have to be taken out.
There's probably something wrong with the reverse gear. Have it checked by a mechanic then see how much it would cost to repair it.
How much it cost to put a transmission in a 1999 passat
I just checked (11-19-13) Jasper engine and transmission and the engine lists for $3998.00 with out core charge.I just checked (11-19-13) Jasper engine and transmission and the engine lists for $3998.00 with out core charge.
how much should it cost to rebuild transmission on 1995 Lexus es300
$50.00
How does it cost to replace a 2003 tahoe transmission
transmission bands
try stopping to get gas at a full service gas station and ask them to check your fluids (all or just tranny), they should do it at no charge...now as for filling it they might charge or get it checked when you get your oil changed
How much does it cost to replace a 2004 nissan maxima transmission and motor mounts
For most American cars it would cost around $2,000 to $3,000. If you had a professional do it. If your are lucky enough to know a mechanic that is trustworthy or a family member and you checked around for a transmission online to find 1 for your car then you could cut that quote in half maybe more.
For a BMW, the cost for a replacement transmission will be between $2000-$2500. This not including the labor cost.
A lot