imgoin4it wrote:
I have used the same BB for about 100K miles. It has been back to the factory once to fix an air leak. What happened can be caused by either of two things. The break away switch can malfunction causing what happened. 9Happened to a friend twice so I do not use the break away and I check things a lot. The other reason could be that the toad brakes were not pimped enough to relieve all the Vacuum from the vehicle brake system. Not sure I've explained the second reason correctly, but make sure you pump the brakes enough times after the engine has been turned off before you tow it.
I'm leaning to the break away switch being a malfunction. The brakes were pumped more then enough to release the vacuum.