I have a 2002 Chevy Cavalier, 2.2L, manual trans. The check engine light was on due to "P0440 Evaporative Emission Control System Malfunction". I cleared the errors, was issued a temporary inspection (expires in a few days), and drove to get the sensors ready for inspection. After about 70 miles, the O2 and catalyst sensors had gone from "inc" to "ok", but the evap sensor is still showing as incomplete. I've now driven 220+ miles -- still incomplete. (aahh!) The garage where I was getting it inspected at pretty much told me tough cookies. After searching around other forums, I think it may have to do with a TSB -- NHTSA ITEM NUMBER - 634261, but I don't have a full description of it. Would really appreciate any insights. Thanks a lot!