Wayne,
I recently needed to replace some dealer items on our Yukon. My local dealer wanted $950.00. I looked online and the price was going to be under $600.00 even with (crazy)shipping. I called my local guy back wanting to keep business and my city if I could. I gave him a link so he knew I was not making it up. He came within $20.00 and I got the parts that day. It was 40% off and he said they still made 15% margin
You might also contact Jeff Tate on PT.com