Question about 2002 GMC Sierra 1500HD

2 Answers

Radio locked after disconnecting battery

Disconnected the battery in my GMC Sierra, and the radio display now reads loc. No radio or cd or nuttin. How do I fix that?

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 129 Answers

You should have the code printed somewhere in the owners manual, but not always the case. If you don't have the code, you will have to go to the dealer and have them put in the code for you or if you know someone at a dealership that would give you the code is a bonus. When you disconnect the battery ALWAYS make sure the radio is off, this should prevent this from happening again.

Posted on May 28, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • GMC Master
  • 3,854 Answers

In your manuel there is instruction to unlocking the radio and you may have the code's written in the back. If it does ask for a code try 0000 and if that does not work try logging on to www.radio-code.com.
They can give you the instruction and codes you need to reset your radio. If you have a good relationship with the dealer they may be able to help you out too since they are always disconnecting and changing batteries.
Good luck and hope this helps.

Posted on May 28, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I replaced my starter on my 2002 GMC Savannah and when I go to start the van the words LOC come up on the radio. What is wrong?


You obviously disconnected the battery, your radio has to be re-coded. Loc means the radio is locked and needs a code to re-instate, did you buy the vehicle new? If not, maybe a different radio was fitted by the previuos owner

Aug 17, 2015 | GMC Cars & Trucks

1 Answer

1992gmc serria 1500 not getting power to fuse panel where do I check


Sounds like the key switch has failed. Either the switch or the linkage between the switch and the lock cylinder.

Jun 03, 2013 | Cars & Trucks

1 Answer

Radio unlock code for 1997 GMC Sierra that has had the battry changed and LOC displays


if you dont know the code i think you are gonna have to take it to a gm dealer..

Sep 20, 2010 | 1997 GMC Sierra

1 Answer

How do i unlock my 01 gmc factory radio ????


How to Reset GM Theft lock Radio's

Article Disclaimer: This article is meant to be used by Delco Radio owners to reset there radios. In no way is it meant to be used for any unethical or unlawful ways.

Purpose

The following instructions will allow you to reset any GM (General Motors), Cadillac, Oldsmobile, Buick, Pontiac theft lock radio.

Requirements

The theft lock radio must be in "LOC" mode.

Procedure:

1. Turn the ignition ON (The radio should display "LOC")

2. Hold down the Radio Presets 2 and 3 buttons for six seconds

3. The radio display changes from LOC to a three-digit number. Write this number down. You now have fifteen seconds to complete the next step.

4. Press the AM/FM button

5. The radio display changes to another three-digit number. Write this number to the right of the first one.

6. You now have a six-digit number, the first three digits are from STEP 03 and the last three digits are form STEP 05

7. Call 1-800-537-5140

8. Press 1 then # (pound). You'll hear "Invalid Code, try again"

9. Press 139010 or 106010 or 206010 or 202107 then # (pound). "it's really *<star>lol"
You will be asked to enter your four or six digit code followed by *

10. Enter the number from STEP 6 then *

11. Listen to the four-digit number and write it down. It will be repeated twice

12. Turn the ignition ON (The radio displays LOC)

13. Use the MN and HR buttons to enter the code from STEP 11

14. Press the AM/FM button. The radio display changes to "SEC". Your radio is now "un-locked" and usable.

Dealership Codes

* 139010
* 106010
* 206010
* 202107

Troubleshooting

If you fail to enter the correct code eight times, the radio goes into INOP mode. You have to wait an hour with the ignition on before the radio returns to LOC mode.

Mar 07, 2010 | 2004 GMC Sierra 2500

2 Answers

I have a 99 gmc and i want to take the factory radio out but it has theft lock and i'm not sure how to get it out, got any ideas?


theft lock is an electric code that keeps the radio from working if the power is disconnected you must reprogram your code to work again if theft lock is not programed by the owner it needs no code to work if you are going to replace it with an after market radio it is mute any way

Feb 22, 2010 | 1999 GMC Sierra

2 Answers

Radio Wont Play after I replaced Battery!


thats because its a key code security device once you disconnect its power source the radio will automatically lock itself to prevent theft but you can take it to a shop that sells radios and they can reset it for you but its impossible to diy because you need a computer to programme the microchip so take it to a shop m8 otherwise it wont work mine did the same hope i helped :)

Oct 25, 2009 | 1994 Oldsmobile Cutlass Supreme

2 Answers

Need code to unlock 1997 Jimmy Radio


the loc code is set the first time the radio is turned on. if you don't know the code there is no legal way to unlock it with out the tools at the dealership.

Aug 14, 2009 | 1998 GMC Jimmy

1 Answer

Radio has loc in the display how do i fix rhis


Go to www.DelcoLockCodes.com and they can get the unlock code for your radio.

Oct 29, 2008 | 2005 GMC Sierra

2 Answers

Unlocking radio for 94 geo prizm


If the radio is displaying LOC then head on over to http://www.delcolockcodes.com and they can unlock it for you. I hope this helps!!!

Oct 13, 2008 | 1994 Geo Prizm

Not finding what you are looking for?
Cars & Trucks Logo

505 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75066 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...