How do you replace the electronic spark control module in a 1989 Oldsmobile Cutlass Calais 2.5?

To replace the electronic spark control module in a 1989 Oldsmobile Cutlass Calais 2.5, first disconnect the negative battery terminal to ensure safety. Locate the spark control module, typically mounted on or near the engine; remove any screws or bolts securing it. Disconnect the wiring harness and remove the old module, then install the new module by reversing the steps—connecting the wiring harness and securing it with screws or bolts. Finally, reconnect the battery and test the vehicle to ensure proper operation.