My check engine light bounces on and off in my 2001 cavalier. I took to autozone the other day to have it checked but the scanner didn't come on. The associate told me that a fuse is blown for the ecm and to have them checked. I'm no specialist but from past experience the ecm is the main control for the car even running. What would be the cause for the scanner not recognizing when it is plugged in? Isn't their a way to get the codes with a paper clip or wire?
