GM Clips
 

Ok.. my Low Coolant warning light keeps coming on, and I've checked the coolant tank (full), and the radiator (full). So I want to see if the sensor itself is clean. But.. there is one reallly odd looking clip holding it together on the radiator.. least I believe that's the sensor. My past track record with plastic odd shaped clips has not been good. Anyone have a good explanation on how to get that sucker off without breaking it?