Chevrolet Sonic 2012 Owner's Manual page 236

10-28 Vehicle Care
3. Install the new blade onto the
arm and make sure the tabs are
fully set in the locked position.
4. Repeat the steps for the other
wiper.
Rear Wiper Blade Replacement
1. Pull the wiper arm a short
distance away from the
glass (A).
2. Pull the blade out from
the arm (B).
It may require extra effort to
remove the old blade.
3. Once the blade pin disengages
from the wiper arm, remove the
wiper blade by sliding the pin out
of the guide hole.
4. Reverse the steps to install the
new blade.