I have a 07 cobalt LT, 2.2, 5 speed manual. no abs, no traction control. brake lights wont turn off. replaced switch, but still no change. weird thing is, the powertrain relay in the under hood fuse box is clicking rapidly when the key is turned on. i've checked the wiring diagrams and it all points to the BCM. i've never had an issue with it before "it now has 221k miles on it" so i'm lost. anyone have any idea's?