Tried to run the scan tool (V2) 7.5 and 8 on the Buick and it would not communicate. I found on the E38 PCM references to pulling the radio fuse. Have not tried that as of yet but will do it this weekend. The E39 controller was loaded in 7.5 and 8 and still no communication. In 8 I had the computer hooked up and and roling code problems on the DIC like StableLock off, Radio off, tire pressure warnings, etc. It is a 3.0L V6.
Are there any other work-around I should try this weekend.