I'm curious to know what other dealers do in this situation. After diagnosing a problem a tech comes to the parts counter and asks for an ECM for example. We bill it out on a repair order and he proceeds to install it in the vehicle. The ECM doesn't fix the problem so he brings it back and asks for a ignition module, etc. - you all know the scenario.
My question is how dealers out there deal with the problem of returned electrical (or other types of parts as well) from the service dept that have been installed and do not fix the problem. Of course they think we should just repair the box and put it back on the shelf and sell it to the next customer. In some cases these parts are special ordered. And in a lot of cases the box the part was in is nearly destroyed, soaked with oil and grease, torn or otherwise in bad shape.
I realize that in some cases electrical diagnosis is not an easy task, but by letting them "try