Q: starts and shuts off on 2005 Cadillac CTS

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
the car will run for about 4 to 5 seconds and then shuts off i cant find were to hook up a fuel pressure gauge on the car
(1) Answer
not sure the fix, i have same issue and it seems to be coming from the little round "part" near the air box on right side of motor. There is a few vac hoses coming off the part, a throttle type cable, as well as a harness type connector. I was having a similar issue, the car runs for a short few seconds then, an electrical short type of sound comes from that part and then engine stops. Can't figure out what the part is called but that is the problem part.