Crank no start after wreck, what could it be???

my husband had a
fender bender in the Galant.. it cranked back
up and he
tried to drive it home but it overheated and
shut off..we had it towed
home...and it hasn't ran since...the radiator had
a crack in it ...I changed
the radiator and put new radiator and put in a
new battery...Car cranks but
will not start..all relays are working..all fuses
are working..fuel pump is working...the SRS
light is on but the airbag did not deploy..also
the gear is stuck in park..it cranks but it's a
sluggish crank " rrrrr rrrr rrrrr rrrr" then
nothing..I
don't know what else to do..I'm checking the
cam, crank sensor tomorrow but could the
ECU prevent it from starting because the
wreck, like a safety thing? I know there's no
reset switch on Mitsubishi...I really can't see or
even think of
anything else and I don't have an OBD II
scanner to check....any thoughts from anyone
would help