So now my mechanic is telling me that there is a short in the ECM of my 2005 Equinox that is causing the Check Engine light to come on. He has cleaned out all the carbon and replaces the EGR valve. He tells me that I will have to take it to a Chevy dealership and it will cost around $655.00 to replace and program. I just want to sell this car, but I can’t until I get it running right. I refuse to sell my problems to someone else. I have already sunk about 2+ grand of recent repairs into this car, so I am hoping someone will have a suggestion on a cheaper way to fix this issue. He tells me that the when that when a EGR valve was put in a year ago someone (another mechanic) crossed the wires which has led to the short.
Thanks as always for your responses.