Radio Code I replaced the battery how do I reset the radio and power locks I have a 2001 Pontiac Montana

try to do reset procedures.
1. remove positive power cable from battery
2. wait for 5 minutes
3.while waiting for 5 minutes switch on all possible accessory,like ignition,internal lighting,headlights,hazzard,A/C,open all door,step on brake pedals
4. after doing procedure #3 ,switch off all the above mentioned accessories
5.install back the positive power cable to your battery
hopefully this should reset your anit theft system to normal

Because you have removed the radio from a power source it automatically goes into stolen mode making the radio useless when stolen. This mode is selected when you change the battery but in that case you would have access to the code to re-enter it. Talk with a radio tech and they may be able to say how to fix or where to go to get the code.

you need a unlock code from a gm dealer

The radio will go to lock when the battery power is disabled. They have a theftlock system installed where you have set a lock code in the radio, every time the power is removed the lock code has to be reinstalled to work ( this simulates the scenario where someone may steal your radio, therefore it is useless to them without the code). If you forgot your code, you will have to contact the dealer and get the initial radio code to reset it. Procedure is usually hitting 2-3 preset together (displays 3 digit code) then the AM button (another 3 digits) they then call Delcotronics and get factory override code. Quite common problem when code is set but most people forget their code. The dash lights however are not related to the battery replacement, I would recheck that the interior light override switch in the roof console is not set to off.

Contact any GM dealer and they can get you the code and assist you further.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

call the dealership and ask if your model has a radio code in it

There is a security code for it, you may have to get it from the dealer or look it up online if its a factory stereo.

you need to take vehicle to a GM dealer to get sequrity code they will need serial number off of radio, and in some cases may have to program to vehicle

you need to remove the radio and get the id number off of the radio and call the dealer with that code and they will give you the proper one or if you know where it was originally purchased from the first owner call them and they will have it for you.
also look inside the glove box area some people write them in ther or the manul on the inside cover

there is posably a radio code in the owners manual otherwise i would say that your best bet is to take it in to a "dealer" there is a code on the radio that matches your vin then the company tells them the radio code i hope i helped. and thank you for using fixya