2007 GMC Sierra 1500 Pickup Owner's Manual - Page 542

Windshield Wiper Blade Replacement Windshield wiper blades should be inspected for wear and cracking. See Scheduled Maintenance (Gasoline Engine) on page 617 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 (Gasoline Engines) on page 632. To replace the windshield wiper blade assembly do the following: 1. Lift the wiper arm away from the windshield. 2. Push the release lever (B) to disengage the hook and push the wiper arm (A) out of the blade (C). 3. Push the new wiper blade securely on the wiper arm until you hear the release lever click into place. 542