Reverse Light Switch

[BlackSheepz]

Hey everybody, I'm getting ready to do an oil change (in the next week or two) on my Z and I remembered my backup lights aren't working. They were working fine until recently and I can't believe that both would go at the same time so I need to check is my Backup switch.

I know that it's high on the drivers side of the transmission but all I'm finding are very old posts where the photos and etc have been removed (thanks Photobucket). This includes the Tech Stickies. (This is both here an on CF)

I also know that the OEM ones aren't available if it is broken. Does anybody have any experience with the aftermarket one? IE THIS ONE from Corvette Central?

Or if it's intact should I just plan to pull the old one and soak the Detent? Will the Transmission lose any oil when I remove the sensor?

Thanks everyone!