GMC 2002 Sierra - Manual (Page 422)

6-55
Windshield Wiper
Blade Replacement
Windshield wiper blades should be inspected at least
twice a year for wear and cracking. See “Wiper Blade
Check” in the Index for more information.
Replacement blades come in different types and are
removed in different ways. For proper type and length,
see “Normal Maintenance Replacement Parts” in
the Index.
To replace the windshield wiper blade assembly, do
the following:
1. Lift the wiper arm and turn the blade until it is facing
away from the windshield.
2. Push the release lever and slide the wiper assembly
toward the driver’s side of the vehicle.
3. Install a new blade by reversing Steps 1 and 2.