I just replaced the whole steering column with key and now it will not start up. When I try to start it I just get a blinking theft light. The key turns, it isn’t locked or anything. Battery and starter are fine. Lights work. How do I fix this?
I’d say your computer doesn’t recognize the new key. Tow to a dealer to sort out.
Any competent lock-smith can fix this. Your key probably has to be reprogrammed. They do house/car calls…but not cheap.