How can you put the transmission in neutral without the key?
On my 93 Metro on the console (at the end towards the back seat ) there is a square button, it pulls out, and when you pull it out you can change gears, of course you still have to hit the brake pedal.
If it has a manual transmission, you simply put it into neutral. If it's a 4x4 and has a manual transfer case, either with a manual or automatic transmission, you simply put that into neutral. If it's a 2wd with an automatic, or a 4wd with an automatic transmission and an electronic transfer case which does not have the option to put the transfer case into neutral, then you have to disconnect the driveshafts.
Your battery is dead and your gear is in park how do you get it to neutral so you can push it without starting the car?
Couple ways to go about it. Put the transfer case in neutral (or the transmission, if a manual), and you can tow it from either axle. If it has an electronic transfer case without a switch to go into neutral and an automatic transmission, you'd have to separate the driveshaft from the axle remaining on the ground.