Where is the ecm located undash of 94 Fleetwood? Driver side center middle or passenger side of vehicle?

It shut down on me while I was driving, had to have it towed. replaced the fule pump and coil (was told that was problem by chevy repair shop). Fired the starter when I placed fuel pump becuse of connection to pump was not hooked up.

Replaced starter. Started but had a hesitation, (jerking type action), when trying to maintain speed but felt good/great while acclerating but then stopped on me again while driving after a month or two.

Replaced cap, roter and electronic module in distributor, will not start.

Coil is not getting spark so I guess it's got to be the ecm.