got from idparts Coolant Heater (Cruze Gen1)
it replaces the 'lower coolant hose' which is actually up higher than the upper coolant hose ???
you COULD buy a hose and heater and two clamps separately and save $$ if you wish.
unscrew the airfilter lid, loosen off clamp where bellows meets turbo, move that outta the way
go under the car, undo the petcock right side of car, drain coolant (gotta remove front splash shield)
upper hose clamp is squeeze type, used 90 degree vise grips for that, hose was STUCK to the pipe, i sliced the hose and got pried it off
lower connection is that plastic fitting with that wire lock piece, first experience, was nervous trying to remove the plastic end from the rad
but internet told to be patient and pull and wiggle
installation - get the lower connection in, then the upper
reverse the process and youre done
lets see if the car will start in -40 now.