sounds like t.c.c solenoid.[torque converter clutch solenoid]
Does it shake and stall when decellerating or at anytime? because mine seems to do that but its only when decellerating at a stop light or stop sign or whever and it dont always do it.. only after long drives. (1992 Pontiac Sunbird). It might be a bad EGR Valve.
does my 1996 pontiac ga stall out in park
I would suggest replacing it.
Sounds like to me that you have a bad electrical short somewhere.
I would have the ignition module checked .
Possible the battery is just too old, or it is damaged.
I had a 1988 Pontiac Sunbird GT with the 2.0L Turbocharged engine. I replaced the alternator every 26K mi. I believe this was due to the underhood temperatures caused by the turbo. I had the car for 123K mi. before I sold it. Still in great shape. Could be due to a short in the electrical system or a bad ground.
The fuse probably blew that controls the dashboard lights.
crankshaft position censor
Bad switch in steering column? diffrent fuses.
The fuel filter could be blocked.
Blown fuse, bad temp sensor, bad ground, bad fan motor