Fergettaboutit. Unlike pre-computer cars, these vehicles rely heavily on what the Electronic Control Module (ECM) tells the engine and the rest of the car to do.

A: Bert, your ignition control module manages your V-6 LeSabre’s three ignition coils. Each ignition coil makes a spark for two companion cylinders in what’s called a waste spark ignition system.

These concern “chassis control module contamination.” Roughly 10,000 Cadillac CTS-V and STS-V sedans have a fuel pump module that could overheat.