2014 Chevrolet Impala Owner Manual - Page 304

10-30 Vehicle Care { Caution Allowing the wiper arm to touch the windshield when no wiper blade is installed could damage the windshield. Any damage that occurs would not be covered by your warranty. Do not allow the wiper arm to touch the windshield. To replace the wiper blade: 1. Pull the wiper assembly away from the windshield. 2. Lift up on the latch in the middle of the wiper blade where the wiper arm attaches. 3. With the latch open, pull the wiper blade down toward the windshield far enough to release it from the J-hooked end of the wiper arm. 4. Remove the wiper blade. 5. Reverse Steps 1-3 for wiper blade replacement. Headlamp Aiming Headlamp aim has been preset and should need no further adjustment. If the vehicle is damaged in a crash, the headlamp aim may be affected. If adjustment to the headlamps is necessary, see your dealer.