Question about 2004 Chevrolet TrailBlazer

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

2nd time this has happened in 2004 Trailblazer. Radio speakers seem to be muted. The only button I pushed different yesterday was the "INFO" button. Is there a setting or a button that mutes the speakers that I have pushed mistakenly ?? Thanks,

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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.

Posted on May 07, 2009

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Margaret, this is free public forum , demands don't play here (free)
and you double posted. why do that.? if you wish to elaborate
try posting below 1st post, as an add.
and for better help? why not post to a BMW forum. (faster)
and no car year, posted or car options listed.

Radio year, model and Car Cell phone options.

no matter.......
the first check on all electronics, is the fuse
most radios have 3 power sources, (to make all features work)
and fuses are on all 3.
have you tried all sources, AM/FM CD, MP3 USB (if opted) .
are all modes dead?
the next check is to try all buttons on the radio. ?
is there a mute button? if car has 4 speaker try the fader lever.
front to rear. left to right , still dead.?
cycle modes. radio, cassette, CD 6 pack , what ever, but do cycle them all as older cars the mode switch can stick.

The RDS is radio station text messages. for song titles.
including time, station identification and programme information.
if this part really works, the RDS part this means the radio is working, but the power amp is dead or muted.
try balance and fader.
many radios (1000s) have fuses in the radio for the speaker amp
that can blow. (shorted speaker wires a prime reason)
or some have in line fuse. and others are in the cars fuse box
which varies by maker or model year.

ok , im looking at the stock radio on level C stock 1991 radio
and even back when (stock to me) the is RADIO muting
so if your car has Cell phone muting bingo that.
and a fuse at rear of radio, (unstated purpose)
guessing,id say there is lamp that glows, CELL mute?


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1 Answer

1996 Ford Explorer factory Radio works but when i install the aftermarket radio no sound comes out from it what do i do ..??


Does it light up? Does it have a mute button? Does it have a mute wire for in vehicle phone systems? If so, it may need to be grounded to take it out of mute, or it may need to go to 12 volts + It depends on how the circuit was designed.

If those check out, or it lights up but no muting make sure the speakers are connected to the correct wires. Also check to make sure the speakers are not grounded. Two wires should go to each speaker. you can check the condition of the speakers with a 9 volt battery touched across the leads, you will hear a pop sound. make sure those two wires for each speaker are connected to the radio correctly.

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The radio in my cadillac cts seems to be getting worse.The reception is getting worse and it also does something wierd every couple to five minutes,It acts like i pushed the mute button for a couple of...


This can be a serious fault in the RF receiving stages as the signal processing being weak the AFT- auto frequency tuning- seems to HUNT around and also produce the squelch - mute activated with low signal.
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My rear speakers used to work now they dont


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

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