If you need to change the rear window wiper blade on the back windshield of your 1st generation (2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 & 2016) GMC Acadia SUV, check out my DIY tutorial (with the replacement part numbers) by clicking on the text link or thumbnail image below.
2007-2016 GMC Acadia Rear Window Wiper Blade Replacement Guide
