Question about GMC Sierra 1500

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Gmc sierra stereo is locked. backup codes are 422 and 431. i want my stereo back

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

betz73
  • 298 Answers

SOURCE: 2000 gmc sierra factory stereo

look behind the glove box, there should be a sticker with the code on it. or in the owners manual if you have one.

Posted on Aug 17, 2008

rouseinator2
  • 24 Answers

SOURCE: I need the color codes for a 1988 GMC Sierra stereo.

Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 4′ x 6′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 5 1/4′
Car Audio Rear Speakers Location: Rear Doors
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Posted on Mar 03, 2009

  • 140 Answers

SOURCE: The radio on my GMC Sierra is locked. Does anyone

YOU CAN CALL YOUR LOCAL DEALER, GIVE THEM THE VIN # AND THEY CAN TELL YOU THE CODE AND HOW TO DO IT FOR FREE.. GOOD LUCK KEITH..

Posted on Mar 12, 2009

  • 1 Answer

SOURCE: Unlock the radio

radio is locked were can i get code is it on truck somewhere

Posted on May 12, 2009

  • 95 Answers

SOURCE: How do I connect a Aux line (for iPod etc.) into

Not on a stock radio. Your best bet would be a radio transmitter that plugs into your cigar lighter.

Posted on Oct 19, 2009

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Theft problems repeair in gmc


with stereos you should be able to call a chevy dealer and find out how to release the code that made the truck lock

Dec 04, 2013 | 1998 GMC Sierra

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2005 gmc sierra, replaced radio with known good radio with same part # and model #, all functions work but there is no sound from the radio or the key and door chimes. Is this a lock feature. Took vehicle...


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My 99 gmc sierra 4wd stereo is locked and the dealer is gonna charge me to fix it. How can I get the code?


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I want to install an aftermarket stereo in my 06 GMC Sierra. Do you have the wiring diagram for the factory stereo harness?


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I need the color codes for a 1998 GMC Sierra stereo.


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Factory radio wiring color codes


Here ya go. enjoy!
2002 GMC Sierra C1500 Car Radio Wire Color Codes
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: Under the center console.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

May 14, 2009 | 2002 GMC Sierra 1500

1 Answer

Unlock the radio


radio is locked were can i get code is it on truck somewhere

Feb 27, 2009 | 2000 GMC New Sierra 1500

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2004 sierra w/ a stereo that is "locked"can't get # 's to come up


as i understand it, only a dealer can help you.....

Feb 01, 2009 | 2004 GMC Sierra

1 Answer

2000 gmc sierra factory stereo


look behind the glove box, there should be a sticker with the code on it. or in the owners manual if you have one.

Aug 17, 2008 | 2000 GMC Sierra

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