GMC 2006 Sierra - Manual (Page 483)

Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for wear
and cracking. See Scheduled Maintenance (Gasoline
Engine) on page 6-4 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 6-18.
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.
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