Should be a the top of the starter - follow the + battery cable should connect to solenoid
look for automatic tranamission 93 Chevrolet astro
The are not linked in any way.
That year did not USE a Crank sensor.
http://www.2carpros.com/forum/automotive_pictures/170934_93_astro_fuel_pump_relay_1.jpg
YOUR KEY AND OR LOCK CYLINDER IS TOO WORN.
You cannot "convert" an AWD transmission to 2WD or vice versa, you'd have to take the whole thing apart.
location to replace transmision solenoide
The 1993 Chevrolet Astro Van power steering reservoir can be found on the back side of the engine. The power steering reservoir will be between the engine and the firewall.
4 Inch in the Pillars in the back and 6.5 in both the dash and rear doors.
My 93 astro did that, It has a cpi (central port injection) It looks like a spider with lines going to poppets. they were leaking. You need to replace the cpi as a unit
You can use pliersto turn back but igintion will need replacement.
You will need to remove the exhaust manifold retaining bolts in your 1993 Chevy Astro. Remove the exhaust manifold. Remove the exhaust manifold gasket and clean the surface. Reverse the process to install the new exhaust manifold gasket.