Fuel Delivery problems of the 2005 Cadillac CTS

05 Cadillac Cts 2. 8l traveling at about 55/60 miles per hour. . . Car pulled in front of me cut me off. To avoid collision, I slammed on brakes and car died. I called dealer immediately and advised, asking was this some kind of special feature, dealer advised car not designed to do such and asked me about quantity of gas I had in the vehicle. I advised 1/4 tank and dealer explained by slamming on my brakes all gas ran to front of tank leaving air pocket causing car to die. . . . Also after just purchasing the car, sitting at red light and the whole car shook and motor revved up high rpms and died. . . Both times the vehicle did start back up. . Nothing has been done to correct due to dealer advised the vehicle must do the same thing to them. I am fully aware recall is it out for this exact problem, but I have not been notified of the recall and unable to get any cooperation from dealerships regarding the above problem. . . . The recall advised must keep 1/4 tank of gas or more in vehicle at all times to avoid engine failure, also states will have to reprogram the ecm (electronic control module) with new software.