The General has issued a service bulletin describing a fix for certain units of the 2021 Cadillac CT4 compact luxury sedan that may be affected by an incorrectly calibrated Engine Control Module (ECM) ...
General Motors has issued a new Service Update, this time for the GMC Terrain. According to the latest bulletin, owners may notice that the Malfunction Indicator Light on their crossover is ...
-it seems that those three little letters strike fear into many a promoter, track owner, or sanction head whenever they hear it. ECU stands for Engine Control Unit. Also called an ECM (Engine Control ...