first check to see if your getting spark, or fuel
ask the local wal mart
where is the fuel filter on a 91 Chevy camaro 3.1 v6 have the injectors cleaned and purged by your mechanic or if that doesnt work just replace the injectors
$1000 $1000
Remove the head and replace the gasket. No other way to fix it.
change out your wheel cylinders..
alarm is falty get it removed only bad part is the doors lock dont go down with the remote
could be a bad spark plug or bad plug wire.
Take it to the garage.
Start with replacing the thermostat.
Usually not repairable, you will have to replace the complete multifunction switch.
change the ignition switch the little black thing on your key is wore down and not making good contact that should fix the problem
Replace the high speed relay.