2020 CHEVROLET SPARK Forward Collision Avoidance Automatic Emergency Braking Problems

Our car broke down on 07/08/2021 and went into the shop on 07/12/2021. It was eventually determined the engine had to be replaced. The car was in the shop until 09/02/2021. The following day during a test drive I noticed some minor, unusual response, almost unnoticeable, from the brakes, but there were no warning lights or messages. I connected a code reader and received the following codes: U0422, U0151, and C0800. I think all of them are sent by the ECU and involve communication problems with the ABS and the restraint systems, but yet, no warnings. I took it back to the shop. They found a shorted or bad Body Control Module, probably caused during the engine swap. If I hadn’t found those codes, perhaps the brakes or restraint systems may not have performed correctly in an accident. Obviously, the BCM can be defective and no warning lights are displayed,...