Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner

tccm swap

  1. TCCM swap

    OEM Issues
    For anyone experiencing the same problem. I had my battery go dead after working on my new radio and when I got a jump the service 4wd light was on. I did the fuse #8 pull, also disconnected battery and let sit over night and still dead. Using this site I found out that you can swap the module...