I was having a problem with the passlock system (who hasn't) and had to change the ignition switch. Didn't work. Changed the BCM, seems to be working fine so far. Never got any help from the dealer when the car went into the start when it wants to mode. Gm has known about this passlock problem since 1999 but refuses to recall.

As a result the radio is now locked out. Anyone know where to retrieve the codes to unlock it. The radio is RDS. Pretty stupid that if you remove the battery cable you have to reprogram the radio. Anti-theft my azz. Its a money grab by the dealer.
Thanks

 

As far as I know there is no work-around; has to be done with a scan tool.

 

Thanks tow-guy that seems to be the only way out of this from the research I'm after doing. I guess its off to the dealer.
Thanks again

 

My Mitsubishi has a radio code in the manual for the radio. It is a 4 digit number you put in to unlock the radio. It also tells how to put the code into the radio. I am not sure if Chevy does it this way or not but if you have the manual for the radio you might try looking at it. Could save a dealer visit.

 

The Tow guy is right, You need a GM Tech 2 scanner to unlock
Go to the dealer.

 

I HAVEN'T.
Have owned at least 40 gm vehicles and have never had any major problems

 

thanks for all your help guys. The dealer emailed me today and told me to bring the car in and they will unlock it for free. Good thing I didn't send the nasty email I had done up, lol.
Chow

 

Don't blame GM or the dealer. The reason the radio locked up was not because of the disconnected battery. It's from the new BCM you installed that apparently was not set up correctly.