I have a 2008 Cobalt LT , 2.2L , AT. Today I noticed my amber CEL came on. P0442 was the code. When I went to look at the Purge valve, I noticed some oil pooling around the TB. Does anyone have an idea of what's going on? My car runs only a little rougher than new but I figured that was because it has 130K miles on it... Someone please help me on this, as it is my family's only vehicle and I must keep it going! Besides, I love this car! Thank you, in advance!