1997 GMC Savana Van Owner's Manual - Page 274

Windshield Wiper Blade Replacement 7. Turn the bulb counterclockwiseto remove it. Install the new bulb. 8. Reverse the above stepsto reinstall the lamp. See "Normal Maintenance Replacement Parts" the in Index for the proper typeof replacement blade. Replacement bladescome in different types andare removed in different ways. remove the type with To a release clip: 1. To remove the old wiper blades, lift the wiper arm until it locks into a vertical position. 6-40