I noticed the rear hatch actuator leaking a few weeks back, so I called my service rep and he ordered the actuator. Took it in this morning to get it replaced. But they couldn't do it because it required a special hydraulic fluid. Which they didn't have and neither does GM factory. The have to contact the manufacturer of the actuator to get the fluid. So, hopefully in a couple weeks they'll have it. Just a head's up to anyone that may have a leak and need to have it replaced. Have them make sure they've got the fluid or can get it before going in. It's not a simple replacement either. They have to drop the headliner in the rear because the lines run a few feet forward and connect.