2005 colbalt radio is locked - Orion Cobalt 2105 XP Car Audio Amplifier

Sorry but your best bet is to take your car to a qualified repair shop > The locks going crazy is more then likely a BCM - body control module problem , same with not being able to put the car in gear. There are probably DTC'S - diagnostic trouble codes stored in the BCM . You have no idea of the level of complexity of your vehicle , It could be a door ajar switch in put to the BCM . A software problem etc...

If you still have the old one, you should be able to match it at this site. Even if you do not, you might be able to ID the remote from memory.

http://www.remotestartexperts.com/replacement-remotes.html

have a load test done on the battery to check for dead cell. ensure that the battery posts and terminals are shiny clean and tight.

check body control module

the keyless lock module needs replaced or reprogramed

dealers, oil change shops, transmission shops.

give or take 2500.00

YOUR CAR HAS THE CANISTER TYPE OIL FILTER ITS LOCATED AT THE FRONT LEFT SIDE OF THE ENGINE.YOU CAN REACH IT FROM THE TOP.

Pretty sure you have a dead battery. The radio and lights may come on, but if the capacity to start is not there, the starter will not turn. There is no such thing as a locked starter, as you describe.

newer radios have a lock code get the code to unlock it