ok my girl has a 2002 ls sport ecotec and about a month ago her car started misfiring. the problem resulted in replacing the icm. ignition control module. fixed the problem. so about 2 days later her engine light comes on and the trown code is o2 sensors faulty. have not had the chance to replace them. and again the icm went out the other day. so i replaced the icm again. now the car runs fine again. but the engine light comes on. now i really doubt the o2 sensors cause the icm to go out. a mechanic told me that there is a relay that is connected to the igniton, o2 sensors and something else. is this true and where is this relay? thanks in advance
