Cool 2008 Chevy Express No Check Engine Light 2023. Web a leaking injector can cause the check engine light to flash. This can be done by unhooking both cables from the battery terminals (negative cable first) and waiting 30 seconds before reconnecting them.
There could also be an electrical short or blown fuse causing the light to come on for no reason. Research the codes and fix the underlying problem; If it does, then the system is working.
