Just to finish this one off. Using the instructions for removing the rear hatch trim here.....
So you remove the first two pieces (the handle with the two screws and the trim around the latch itself. Then you can get away with partially removing the next piece to where you can slide the part out/back.
The latch is held in with two T40 head bolts. When you remove them you can push the latch inward and then back around the bracket. Remove the connector (I used a small flathead screwdriver to gently lift one edge of connector and it pulled off). Installation is the reverse of the above.
The hardest/scariest part of this was hearing the clips come free from the large trim piece because they are metal tipped clips and they are loud breaking free.
Part number is 13585478. I was a cheapskate so I bought one from ebay from a low mileage wrecked Volt. Price for a new one is about $75. Figured that I saved the price of full retail part plus 1 to 1.5 hours of labor. It took me only about 30 - 40 minutes and that included running in to watch the youtube video again.
Hatch is working perfectly again.