Had the timing chain replaced in a local garage. Following that the car won't start (it cranks but that's it). Getting the following error codes: B1168: Gauge Control Module Lost Communication with ECM/PCM (Engine Messages) B1169: Gauge Control Module Lost Communication with the PCM (A/T Messages) B1177: Abnormal Battery Voltage The battery has since been replaced but the error remains. Tried clearing the codes but they keep coming back immediately. Any help greatly appreciated.