Yes Jacob they do diagnose ecm/pcm, I highly recommend i-70 auto great techs there!
Not exactly sure what an ecm/pcm is, however over the summer I took my wife's vehicle to I-70 Auto Service. With what I suspected as an bad ignition switch, which was very difficult to get to not to mention work on myself. I-70 technicians ran a full bumper to bump diagnostic test on the vehicle, and printed out any faults and recommendations. If there is something wrong with your car they have the equipment and technical ability to take all the guess work out of it. I highly recommend them.
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