I just checked my #1476 and the height of the driver side wiper to the windshield is 1 1/8 inches. It fits under the two stops just below the window base. The wiper blades are 19 3/4" (driverside) and 19 1/2" (passenger side). I used the original blade holders, but only replaced the rubber blades. They did bang into each other, but I bought the shorter blade on the passenger side from Chevy dealer. No problems since. Attached is a picture to compare.
Hope this helps
