I bought a used radio off ebay for my 05 H2.I installed it and it worked while in accessory mode,once I started the vehicle it was locked.I took it to the stealer and they charged me 106 bucks to unlock it but it had no volume(the volume **** nor the steering wheel buttons would show volume bars on the head unit)I put my non working cd player unit back in and had sound from the speakers.Has anyone experienced this?Is it possible the dealer fugged something up or did programming procedure wrong.Why did the everything work fine in accessory mode and not after they unlocked it?

 

You need to have your dealer program your radio to the options in your hummer. They have to use a tech 2 and sps.

 

I installed a used radio/Nav system and had the system unlocked with no problems.

 

I replaced BCM and Cluster, do I need to go to a dealear, or is there some un lock sequence?
Thank you!