ive found that usuallu when the 4wd tries to engage on its own or wont come out of 4 wd it is usually bad switches in the pannel where you engage 4wd try puttin in 2wd and un plug the switch pannel if it stays in 2wd replace the switck pannel.
This problem could be in the transmission or there could be a broken axle, if the vehicle is front wheel drive. Start by checking the computer codes if possible, for any issues that may show where the problem is.
If there is a loud noise when shifting from park into drive, it may be a transmission problem. One should shift slowly, as the transmission could disengage itself.
A car that won't move when in reverse could indicate a problem with the transmission. It could also indicate a problem in the gear selector.
A blinking D light indicates there is an electrical problem with the transmission. Seek professional help to have this repaired. Do not keep driving the car or you can destroy the transmission.
if the vehicle could not be driven the problem is in the transmission not the transfer case if the transfer case is good you could still drive on the front wheels, the problem may be in the differential it is unusual to loose all gear,but if the problem is in transmission i would suggest the main shaft is broken
Check transmission fluid level Could be a bad transmission pump
Plain and Simply it needs repaired get it to a trusted repair shop. Good Luck.
A plugged transmission filter can cause your transmission to hesitate when you shift into drive. A collapsed vacuum hose can also cause the problem.
what is the problem when the car will not go in drive or reverse? and the transmission fluid is still full
Transmission problem
It could be a problem with the transmission. It could also be a problem with the torque convertor. Take it to a reliable mechanic and they should be able to test drive it and tell you what is wrong.
There may be a problem inside the transmission, or the linkage could be loose or disconnected in some way.