GMC Yukon Denalid Owner's Manual page 479

3. Install the new blade onto the arm connector
and make sure the grooved areas are fully set
in the locked position.
For the proper type and size, see Normal
Maintenance Replacement Parts on page 563.
Backglass Wiper Blade Replacement
1. Lift the wiper blade assembly up and out
of the park rest position.
2. Pull the wiper blade assembly away from the
backglass. The backglass wiper blade will not
lock in a vertical position, so care should
be used when pulling it away from the vehicle.
3. Rotate the wiper blade assembly, and pull it
off of the wiper arm. Hold the wiper arm in
position and push the blade away from
the wiper arm.
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