The "clip" is actually a spring. You're supposed to shove the end opposite the spring in the direction of the spring against the spring's pressure and then lift out the non-spring end first. Often the spring has been mangled and then you need to fish behind bumper cover to get the spring out. As long as the tabs on the housing opposite the spring aren't broken, carefully re-shaping the spring so it won't slip behind the bumper opening can usually put everything back in the correct working order. Like removing the washer nozzles; it's not rocket science....once you have the part in your hands to see how it's supposed to work!