I need to change the ac expansion valve because my ac isn't working. The compressor works fine and there is absolutely no leak but the expansion valve won't open so I can't get any ac. I know that it located under the glove box but do I have to remove the whole plastic box or get to it b/c I can see it when I remove the plastic cover but it only 2 inch wide so I can't work on it. Thanks in advance and detail on bolts that need to be removed would be helpful.