does anyone know how to unlock a 2000 grand am gt radio? just switched battery and now the stupid thing is locked!

------------------
86-2m6

You'll have to take it to the dealer and pay them to unlock it.

------------------
Competition Yellow 84 2.5

Per http://www.asashop.org/autoinc/april99/techtips.htm

quote Delco Lock was first introduced in 1986 by Pontiac and used until 1989. This basic system works in conjunction with radio controls located on the steering wheel. If memory power is removed from the radio, "LOC" will appear on the digital display when power is restored. Unlocking the radio is a basic two-step procedure. First, turn the ignition and radio on, then depress the "mute" button on the steering wheel control pad for about 10 seconds. This will send a digital signal to the radio, restoring it to normal operation. If the control pad does not work, there are two other ways to unlock it. The radio may be sent in to an authorized repair center to be unlocked and will be programmed to "wake up" one time only in an unlocked mode. The other method requires using a bi-directional scan tool which has the capability to communicate through a radio data line at the ALDL connector. If you will be removing power from a vehicle with this system, try the radio control pad first. If it doesn't work, notify the customer and explain the two options. In 1988, another version of Delco Lock was introduced and was used until 1995 by Pontiac, Oldsmobile, and Buick. Again, this version is only found on vehicles with radio steering wheel controls. If memory power is removed from the radio, it will be locked when power is restored. The difference is that after power is restored, the radio will automatically communicate with the steering wheel control module and unlock itself. If a new steering wheel control pad is installed, turn the ignition and radio on. Depress the station preset buttons in positions 1 and 4 to unlock the radio and return it to normal operation. Delco Lock II (also called Theftlock), the next generation of anti-theft controls, features an owner-programmed lock code which is entered through the radio controls. If the customer programs a lock code into the radio and memory power is lost, "LOC" will appear after power is restored. The locking code must be entered to allow its use. If the customer does not have the code number, the radio may be unlocked by an authorized General Motors facility using special access codes.

If all else fails, try http://radio-code.com/index.htm

[This message has been edited by spark1 (edited 09-07-2003).]

If it's a theftlock system then the procedure to unlock it is in the PFF Archive. Save your money, don't take it to a dealer, instead do a search on Theftlock and everything you need to know is there.

Found it https://www.fiero.nl/forum/Archives/Archive-000001/HTML/20021104-2-024981.html

(edit typos)

[This message has been edited by spark1 (edited 09-07-2003).]

Right now it is a mix. I'm not sure what is in what model. Some still use the older TheftLock system... That is covered in varous places.

Some 2000 and later GM/Delco/Delphi radios are tied to the OBD2 bus. They can be controlled thru use of the Tech2 tool. (All GM dealers and a few independants have these.) The ones that are tied to the OBD2 bus have the VIN number programmed into them. They cannot be programmed to operate in another vehicle even with Tech2.

GM has begun locking sound to the cars folks. You cannot even upgrade the sound to another GM/Delphi radio in many models. What it comes with is what you get. Allot of dealers are not happy about it either. They made quite a bit of money upgrading the radio in allot of cars.

The aftermarket is also very upset. If the factory radio is removed you loose certain functions in the car. OnStar and other functions are tied to the radio.

GM expects to have the sound locked to all new vehicles within a few years.

This has been covered in the TechLink paper sent to GM dealers everymonth.

------------------
No good ever came from dark and spooky. Norville "Shaggy" Rogers

The Ogre's Fiero Cave (It's also at the top of every forum page...)

That's not nice.

I haven't heard about that new, but boy is that vicious!

I can understand the need to "protect" the audio system from thieves, but there are valid reasons for swapping out radios. What happens if the radio dies - then what? Sure, radios generally last longer than the life of the car, but sometimes they do fail.

I can understand why the aftermarket guys would be upset - GM still sells more vehicles worldwide than any other manufacturer on the planet. There goes a big chunk of revenue for the audio guys if someone wanted a different radio. Same can be said for dealers, too...

What has this world come to?