Question about 2004 GMC Envoy

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Replacing factory radio

I replaced my radio in my 2004 gmc envoy with an after market radio installed fine but could'nt find the ignition wire for the radio so it would turn on and off with the key i used a tester but could'nt find it in the factory plug

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  • Anonymous Feb 07, 2009

    i think those GM people just want to make money i owned 3 GM SUV for last 10 year all the TIME same problem came to all my stereo I`m sick OF it will not BUY any GM any more no wonder people don't BUY THERE cars,,,,,,,,,,,,,

  • amar82ca Feb 07, 2009

    my stereo is frozen i have 6cd jammed in side it is a 2006 gmc envoy help me what can i do?????

  • Anonymous Feb 25, 2009

    I replace my factory radio with a new Cd player and now it has now power whatsoever. I also have the same problem with my speedometer. I didnt expect to see all of these complaint on the same problem.

  • Joyboy012000 Apr 01, 2009

    speedometer - not working

    I change the speedsensor but it will not work.

  • Anonymous Mar 31, 2014

    i put an after market cd player in my envoy and now ave nd



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With that year vehicle it is recommended that you use a special harness because it has an factory amp and in order to get the proper wiring it requires the harness also if you don't use the harness you will loose your onstar and vehicle chimes and warning sounds.

Posted on Oct 08, 2008


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I have a 2004 gmc envoy and the security light came on what does this mean?

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2004 envoy base I spliced the radio harness. Trying to hook up a aftermarket radio what's the color code and why is there two orange wires if the power is orange witch one is

This is why walmart and others sell a wiring kit that plugs one end into the stock wires and the other to your radio, One hot ware goes to always hot wire for clock and station presets, other goes to switched ignition so radio goes off with the key.

Jan 24, 2015 | 2004 GMC Envoy

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Rear radio in envoy not working. It will not come on at all.Front radio works fine.

This is one of those mysteries of GMC engineering. I compared the Envoy without and with rear seat radio and found 10A HVAC FUSE B 36 (!) in the rear fuse block is the source of power. Replacing it may get your radio working again.

Dec 16, 2014 | 2003 GMC Envoy

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These truck are known to have ignition switches go bad and result in strange electrical problems. I would suggest replacing the ignition switch (not the part that the key goes into).

Aug 02, 2012 | 2004 GMC Envoy

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2004 GMC Envoy Radio high pitched noise when off and static

In my opinion, it's almost certainly the radio. Even when turned off, it is still alive managing a few other things (like chimes) until you exit the vehicle, and I suspect that part of the radio is faulty.

Jul 16, 2017 | 2004 GMC Envoy

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Factory installed trailer lights do not operate correctly. The right blinker/brake lights and running lights do not work. I have rewired trailer (works fine when connected to other vehicle). Replaced the...

find the wires that are splice into the factory harness and correct this problem they gave you
Good old Generous Motors I call them..Wonder why I drive Fords after 25 years with GM?

Mar 12, 2010 | 2004 GMC Envoy

2 Answers

Installing an aftermarket stereo, spliced the wires and have everything connected including the remote wire to the factory amp wire but still no sound.

There is no remote wire on these newer trucks....03 and up....u have to buy the harness....although i didnt....i have an 03 gmc sierra and just pulled the schematic and matched the wires. And there is no programming to do on an aftermarket stereo.....I work for GMC and we cant program aftermarket stereos......if u buy the right harness ...and its over $100 then everything should work just fine.....and this does not disarm ur alarm system either....mine still works fine....hope this helps

May 08, 2009 | 2003 GMC Sierra

1 Answer

Tried to put an aftermarket radio.

Hello, If you haven't cut any wires you really don't need to. They make a plug that you can get at wally world for about $15. It makes a clean installation and when you get ready to sell the envoy you will be able to replace the aftermarket back with the stock radio. It will make the wiring simple and easy also has an adapter for the antenna. Please rate my answer, Thank you.

Mar 04, 2009 | 1999 GMC Envoy

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