Gear shift is stuck in 1996 gmc sonoma, what do i do

sounds like some gears are sticking you may want to get your trans serviced ASAP

The brake lamp switch is located on the brake pedal assembly under the dash. (See Diagram)

To move the vehicle, try this:

1. Turn the key to OFF.
2. Apply and hold the brake until the end of Step 4.
3. Shift the transmission to NEUTRAL (N).
4. Start the vehicle and then shift to the drive gear
you want

on first gear it shifts rough it likes gives u a jump and after that it shifts good couldit be the pumpkin

if you want to put it into gear,turn the key forward(not crank)
look underneath by the brake pedel
there is a neutral safety switch(not break light switch)
depress it and you can shift into gear

Check the transmission mount. It may be broken at the center rubber cushioned area

clutch is worn and the gap has widened between the flywheel and the plate

my friend you are having valve body problems, the 1-2 shift acumulator valve is probably stuck, you have to service the valve body or replace it

Either you have a worn shift fork and fifth is not fully engaging or the synchro for that gear is worn Both are internal and if fork is worn I suggest you have synchro replaced as well..

more info

Reverse is not sycronized, this means the gears have to stop to mess and not grind, two thing cause this, being to quick to slam into reverse after clutch is depressed, a problem with the clutch.