Pontiac sunfire starts, i go to shift into park or reverse, wont move in either. vehicles has been sitting for still for a yr. what is the problem?

Shifter cable/ linkage needs to be adjusted.

First, check transmission fluid level, if low may not be able to pump, may need trans filter and fluid change.

check shift cable under hood. it may be broken !! to transmission.

gear shift stuck on my 2001 pontiac sunfire won't budget what can i do

you car likely thinks its stuck in reverse, which it may be... even if you can roll it. you'll need to find a way to either get it into park or neutral, normally this can be done by the actual linkages under the shift console or from underneath the car.

You messed up the linkage and it is not going to fix itself. You have to check what became unhinged and put it back.

Likely the shift cable has broken or become disconnected. Move the shifter and watch the control arm on the transmission to see if it moves. If not, check/ replace the cable.

CHECK BRAKE LIGHT SWITCH FUSE AND THE BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID FUSE.IF THEY BOTH CHECK OUT OKAY.YOU HAVE A FAULTY BRAKE LIGHT SWITCH OR FAULTY BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID.

check the linkage on the transmission it could have broke or just simply came unhooked

I do not know what you are looking at in the manual, but you probably heard a horrible noise when you put it into park, as the parking pawl tries to hold the car in place. Thist usually does not harm the transaxle. If the engine won't start then something else happened, perhaps the neutral safety switch was damaged or knocked out of adjustment. You might try to move the shifter back and forth and then back into park and then try to restart. If that doesn't work try to put the car in neutral to start. If you must have the car towed somewhere the repair should not be expensive, just have them reset the neutral safety switch.