I have a 05 yukon i shocked the car when taken out the battery. Put new battery in truck wont start. Replaced ecm had a guy come & program it. Truck starts but with the radio fuse in thats under hood all gauges wont work, all lights are on, on dash cig lighter dont work, windows & locks. Take radio fuse out now it all works...few dayz later i put fuse back in now everything works but no sound from radio, cig lighters still don't work & digital climate control wont go over 32 or under 15. I was told bcm may be bad was just tryna get alil feed back...thanks.

 

You do realize this is a forum for the Chevy HHR - a totally different vehicle than your 2005 Yukon?

 

Lol, I would be pointing fingers at the radio first man. If you still have communications through the rest of the vehicle (Interior) then your BCM is working. But it sounds like you are about to go dashboard diving to some extent. Good luck man.