Therefore, there's no one component you can point to and call "the started relay." Troubleshooting starting issues on a Chevy Colorado requires a diagnostic scan tool to identify the problem. It could be a fault in the BCM, a problem with the starter motor itself, a wiring issue, a faulty ignition switch, or various other possibilities. Taking it to a qualified mechanic or auto electrician is the best course of action if you're having starting problems.