Originally Posted by rage
From what I have read, and correct me if I'm wrong, but you need to turn up down the transfer rate under Device Manager>Ports>Serial Cable from 16 to 1
You need to drop Latency to 1. If you still get that error, it means either you have a bogus cable (please tell me you got the one that's been recommended over and over and not some random other one to save a few bucks) or you need to remove Pin 8. If your car was produced March 09 or later and you still have Pin 8 active that's your issue.