90' V2500 burb. TBI350/400. Not sure they are related. Just realized after owning this burb for a couple months that the flashing brake light is giving me a code: 9 quick and 1 solid. After searching, I am coming up with this: Code 9: open or grounded speed signal circuit Got that code off this thread: http://coloradok5.com/forums/showthread.php?t=74676&highlight=Brake+light+codes Anyone know how to fix this, or where to even start? Also, within the last couple weeks I have noticed a pretty spongey feel in the braking system. The pedal will fade at stop lights from time to time, but its becoming more frequent, so I am guessing that either 1) they are related or 2) that the master cylinder needs replacing. Just curious if anyone has had a similar issue. I never had an issue with the braking up until last week, which is why I don't think they are related, but would still like to fix both. Any ideas?