Door lock problem on 2006 G6
I just bought this 2006 G6 from a neighbor and I got one key and one fob. The fob works perfectly locking and unlocking the doors and releasing the trunk. The interior door lock switch works to lock or unlock the doors and the interior trunk release switch works fine. The ignition key starts the engine and locks all the doors from the driver door, but will not unlock the doors or unlock the trunk. The dealer says the activator switch is bad in both the doors and the trunk release. I find that hard to believe since everything but the key activates the switches properly. Is this a key issue or something else?