2004 GMC Envoy Owner's Manual - Page 361

Replacement Bulbs Exterior Lamp Halogen Headlamps Low Beam High Beam Front Sidemarker Lamps Front Turn Signal Lamps Tail and Stoplamps Rear Turn Signal Lamps Back Up Lamps 9006 HB4 9005 HB3 194 3457 3057 3057 3157 Bulb Number 1. To remove the old wiper blades, lift the wiper arm until it locks into a vertical position. For any bulb not listed here, contact your dealer. Windshield Wiper Blade Replacement Windshield wiper blades should be inspected at least twice a year for wear or cracking. Notice: Allowing the wiper blade 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 blade arm to touch the windshield. A. Blade Assembly B. Arm Assembly C. Locking Tab D. Blade Pivot E. Hook Slot F. Arm Hook 2. Press down on the blade assembly pivot locking tab. Pull down on the blade assembly to release it from the wiper arm hook. 5-53