Will not go in reverse. Will start out and drive in 1st gear only. Once it tries to shift to the next gear the transmission disengages and car must be shut off in order to go back into first gear. It will not go back to first gear even if the vehicle is stopped and put in park/neutral.

Do You do have reverse

Sounds as if forward driving gears are shot. Different gears make vehicle move in reverse. I would ask if transmission fluid level when checked is in the operation range or full.

Sounds like one of the levers inside the transmission is either broken or otherwise disengaged. Remove the shifter to see if you can see any obvious reason.

Sounds like your synchronizors are shot. Try double pumping the clutch. May be time for a rebuild.

Check the fluid level and if it low top it up. However I doubt this will fix it. The bad news is that it sounds like your transmission has had it and the only solution is to get it repaired. Take it to a specialist transmission repairer for them to do a diagnosis, but expect bad news.

Make sure you car is actually in PARK, Easy to do, Just disengage the parking brake (emergency brake) and attempt to push your car both forward and reverse to ensure your car isnt in neutral. If you cant budge the vehicle your good to go! If it rolls forward it may be in neutral or a forward gear. if it rolls backwards it may be in neutral or reverse. If it rolls both directions its in neutral. On that note if it moves at all skip to the third step (***) and make sure the transmissions shift bracket is in the park possition. Depending on your cars transmission model the parking gear is located all the way left to the farthest possition or all the way right to the farthest possition) One direction will put you in Park, the other in will put you in 1st gear, If your in 1st gear the linkage should be too far away from the shift plate to connect if your column says you are in park. DO NOT ATTEMPT TO START YOUR CAR WHILE IT IS IN A DRIVE GEAR AND THE LINKAGE IS DISCONNECTED IF YOU ARE ABLE TO START YOUR CAR IN ITS CURRENT STATE DO NOT MOVE THE TRANSMISSIONS SHIFT BRACKET UNTIL LATER IN THIS INSTRUCTIONAL!!!!!

* Floor shift automatic, the push pin lever (located inside your shifter/gear stick) may be malfunctioning. You have to pop the grip off and inspect the white plastic pin inside the shaft to see if it is damaged, also check inside the grip while you press the safety release (shift lock button) to ensure the internal slide mechanics are propperly working). Also check for anything obstructing the levers movement inside the floor housing.

** Column Shift. Make sure your pull pin lock is working properly (disengages the shift lock when you pull back the gear shift before you select a gear) if its broke theres two possible behaviors you'll experiance -1. You cant pull the gear shift back at all or -2. No effort or less than normal effot is required to pull back the gear shift. If all that checks out then you have to inspect the steering column linkage bar (you may have to remove some of the steering column housing to view it. Make sure the bar isn't bent or that its movement isnt obstructed.

***Automatic Transmission Linkage Check - Look under the kick panel located above the gas and brake pedals.........Once linkage is located under the dash (kick panel) disconnect it and try the gear shift. If the cable moves under the dash then reconnect it and move on to the next step.
Now block the wheels and climb under the car and disconnect the linkage from the transmission and have someone work the gear shift while you see if the cable is operating propperly, if the linkage moves (as it should) then try shifting the transmission back and fourth by hand while the linkage is disconnected., If the shift bracket feels stiff or is dirty clean it off with non corosive chemicals so you dont damage any seals. If the bracket operates smoother go ahead and reconnect the linkage and try shifting with the column again. Be sure to move the shift bracket back to the park position and make sure your shifter column is in park as well before you reconnect the linkage, if you dont you are sure to run into more issues.

Hope this helps you out! If all the mentioned area's above are in working order then your problem is with the car's transmission and you should take it to a speciallist.

First gear and reverse gear run off the same band inside the transmission. the rest of the gears will start having problems soon.

Its the electronic shift control located just under the battery ontop the transmission replace or repair will solve the issue

it'll go into drive but once it reaches 1500 rpm it'll drop into neutral as a safety because at this rpm it is being told to shift gear and when it fails to do so it safely goes into neutral

it will go into reverse just fine and park and you can run all the low drive gears until you reach 1500 rpm then it'll cut it off

i pulled mine out re soldered bad components on the board to fix it but im an electronics engineer it may be easier for you to just replace it

no power stuck in 3rd gear electric shop unless youve burnt it up good luck...www.TransmissionGarage.com

Sorry but if your reverse is having trouble you will probably have to replace or rebuild tranny like me. Otherwise try new filter and fluid first.