A new GM service update details a free-of-charge fix for GMC Acadia and GMC Terrain crossovers affected by an electronic brake control module problem.

A new service update from General Motors describes a fix available for the 2025 Buick Enclave related to reprogramming of the electronic brake control module.

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.