Q: what could be the problem modules ,short,alarm system, or fuses....? on 1994 Pontiac Bonneville

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
the car shuts off power whenever you lock doors, car will not start immediately afterwards tried changing icm, checking ecm, dealer says it may be control module for the doors,im trying to trouble shoot problem myself to avoid dealer prices could it be an alarm issue perhaps or fuse need some good tips on how to go through a process of elimination....?
(1) Answer
My only advice is take this to a professional. Everytime you replace a part, you potentially add a new problem into the mix. You may eventually have to take it to someone anyway, except then it will take them more time to diagnose the problem, which will cost you a lot more in the long run.
If you must try this yourself, get a good repair manual, try one of these:
Helm Online/Paper Repair Manuals: