One problem related to engine engine control module (ecu/ecm) has been reported for the 2019 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2019 Chevrolet Silverado 1500 based on all problems reported for the 2019 Silverado 1500.
Chafed or broken wiring harness (very common) — this is the most frequent cause on newer gm vehicles. The factory wiring harness to the mass airflow (maf) sensor is too short or secured with an overly tight zip tie. Engine movement causes the lin bus wire to chafe and break internally near the connector.