Question about 2004 Chevrolet TrailBlazer

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My rear speakers used to work now they dont

I have a 2004 trailblazer my rear speakers wont work they used to work fine.Could it be muted also?

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Check your fader option...if that fails, you might have loose wires or need to replace them.

Posted on Jun 01, 2009

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1 Answer

Wiring for a 2004 trailblazer stereo


Here are the factory wire colors.
2004 Chevrolet Trailblazer Car Stereo Radio Wiring Diagram
Car Radio Constant 12v+ Wire: Orange
Car Radio Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Front Speakers Size: N/A
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
Rear Speakers Size: N/A
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 26, 2012 | 2004 Chevrolet TrailBlazer

1 Answer

What is the speaker size for 2004 Chevy Trailblazer. I am going to replace both the rear speakers, they are not working.


They are 6.5 inch, but may require an adapter because they are slightly over sized. BUT, if BOTH rear speakers quit working, that is probably a problem in the RADIO, not the speakers!

Jul 04, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

Rear speakers are not working in my 2004 Trailblazer. Can you provide me (my mechanic) with a "issue checklist" of things he can do to check? I don't know exactly when the speakers stopped...


first check if there power going to the back speakers use a voltage meter or check the fuses located under the back seat on the drivers side

Feb 02, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

Rear speakers stopped working in 2004 chevrolet trailblazer


This could be caused by many things. Generally, if they just stop working altogether (without being abused) it's a failure in the internal amplifier in the radio (head unit) itself. Other possibilities include:

1.) Blown speakers due to abuse
2.) Faulty wiring

You can test for a blown speaker by using a multimeter to measure the resistance in each speaker. Unhook them and put the contacts on the terminals. They should read at or near 4 ohms of resistance. If it is 0 or near 0, they are blown. Ask your kids if they turned daddy's radio up loud when he goes into the store ;)

Dec 01, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

Rear-Left Speaker Not working


Speakers inop are very common in trailblazers. It is 99% of the time the speaker.

Jun 22, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

Radio speakers seem to be muted. I pushed INFO button, did this cause something to mute ??


Some radios have phone buttons that mute the speakers so you can talk on the phone. If you have Onstar and no active subscription it can also mute the radio thinking you are trying to talk to Onstar.

Apr 24, 2009 | 2004 Chevrolet TrailBlazer

2 Answers

Headlights wont come on, but parking lights work...i dont get it


Was sent in by another poster, just posting his results which fixed mine. Problem was relay $50.00 at GM only.

Check the relay module. 45 or 46. on the engine relay block. you can swap the two they are the same part number, then you will know. Dont start the engine, just check the lights. If it works replace the relay module. You may have to order the part from the parts store. Or go to the dealer to get it.

Mar 18, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

Why wont my rear speakers work on 2004 chevy trailblazer


hello josh!!! I had the same problem, Have you made sure everything on rear is off? If so the front radio will have this headphone looking thing in the top left corner, plug ear phones in & turn rear on. then make sure rear radio is off. turn vehicle off then START it! that resets it.If that doesnt work check fuses!

Feb 26, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

Rear speakers stopped working


my speakers went out front and rear i was told by an audio tech. that the systems that chevrolet put in them each speaker has its own amp to bust the sound the only way to fix it is to replace them.
if you have a warranty chevrolet will replace them otherwise find a junk yard or new system. i ordered a set of used speakers off ebay havent installed yet.

Sep 01, 2008 | 2002 Chevrolet TrailBlazer

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