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no sound from aftermarket 2003 avalanche


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renzam69 
Member - Posts: 2
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Joined: March 02, 2006
Location: United States
Posted: March 04, 2006 at 5:13 PM / IP Logged  

When i tried to install an aftermarket radio in my  2003 Avalanche, everything works except the speakers. i checked it with two radios and two different wiring harness. does anyone out there have any ideas what it could be. i also tried to wire it directly but i cant find a wiring diagram for  my radio.

KarTuneMan 
Platinum - Posts: 7,056
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member consistently provides reliable informationspace
Joined: December 14, 2004
Location: Isle Of Man
Posted: March 04, 2006 at 6:05 PM / IP Logged  
Radio 12v
 orange
 +
 radio harness
  
Radio Ground BLACK/ white  -  radio harness   
Radio Ignition Class 2 Serial Data       
Radio Illumination N/A       
Factory Amp Turn-on pink  +  radio harness   
Power Antenna dk. green  +  radio harness   
LF Speaker +/- tan - gray  +,- radio harness  
RF Speaker +/- lt. green - green  +,- radio harness   
LR Speaker +/- brown - yellow  +,- radio harness   
RR Speaker +/- blue - lt. blue  +,- radio harness   

Ya see that line that says Radio Ignition.....that could be your problem. OR factory amp turn on....

ss-installer 
Silver - Posts: 444
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Joined: February 27, 2005
Location: United States
Posted: March 04, 2006 at 6:58 PM / IP Logged  
did you use an interface module?
renzam69 
Member - Posts: 2
Member spacespace
Joined: March 02, 2006
Location: United States
Posted: March 05, 2006 at 12:27 PM / IP Logged  

.

what is the interface module?

stang351w 
Silver - Posts: 350
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Joined: August 20, 2003
Location: Canada
Posted: March 05, 2006 at 1:25 PM / IP Logged  
well..without the inferface module you will lose certain things amongst the vehicle...i'm not sure excatly what in that specific vehicle... i also thought those vehicles had an external amp (someone correct me if i'm wrong) but either way, did you connect the blue wire on the back of your deck to anything?   what that wire does it sends a power signal to your amp(s) and tells it to turn on, if the factory or aftermarket amp doesn't see that signal then you get no power to the amps and no sound.
Tri County KustomZ
certified installer

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