Low fluid pressure, sticking checkball, worn clutches......these are some likely causes
If your 1995 Chevy 2500 truck won't go in reverse, you got some transmission problems.
The transmission is broken. Take it to a shop.
its inside the transmission remove the transmission pan and you will see it the filter snaps in
possibly a bad linkage between your shifter and your transmission, if that's not the problem its the reverse gear in your transmission
it has a 4L60-E
Time for a transmission rebuild.
There are several things that can cause your 1995 Chevy Cavalier transmission not to go into drive or reverse. The most common cause is a lack of transmission fluid. A broken shifting fork will also cause the problem.
It's probably a worn or damaged clutch or hydraulic valve body inside the transmission.
Could be a number of things, check your your transmission fluid, if the level is fine, it may be your transmission or clutch. Most likely your clutch, which is cheaper than a transmission.
Have you ever changed the fluid and filter in the transmission? If not, that's the first thing you should try.
Bring to a transmission shop
If it still has a reverse, just in the wrong place, then the linkage or cable from the shift lever to the transmission has streched or fallen out of alignment.