Yes.
The ESC module is in the distributor
I believe in 93 they had the newer style computer, this eliminated the electronic spark control module.
V8
Where is the electronic spark control located a 1995 Chevy Tahoe
1995 and earlier models use a separate ESC module mounted near the throttle body of TBI
in the distributor cap
Looking from front of truck, it is mounted on top of the engine, left of the throttle body.
It advances and retards the engine timing as needed.
Right next to the gas moduale
Remove the distributor cap and rotor. Now look in the distributor and you will see an electronic device that has 2 different electrical connectors on it. That will be the module. remove the 2 screws and take it out.
Generally if the spark control module on an engine is bad, the car will run roughly. It will likely miss and die at low idle speeds.
its inside the distributor.