I am having the same problem with my 2003 chevy trailblazer.
I will take it that alpha numeric code and my key to dealershio next week. Thanks for the info.
One question, if I tried to start the vehicle after replaced ECM with the old key, will it mess uo the new computer?
Also, I lost my keys a cpl years back and no longer have a key fob. Should I purchase a new keyfob as well?
Thursday, June 27th, 2019 AT 1:05 PM