car radio

2002 GMC ENVOY
201,103 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC
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CHAUNCEY730
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hello, i got a new radio for my vehicle and when i installed it I connected everything correctly and got power to the radio but no sound, not a noise. but, the radio shows it is playing. it does have a built in amp. how could i fix this? could i take the amp out? i talked to a stereo place and they said i need a $90.00 kit, but i think there just trying to get me to buy their stuff.
Sep 5, 2017 at 10:32 AM
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STRAILER
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The amp needs to see the radio turn on so the amp does the same. Does the new radio have a blue wire for the antenna? This is what most people use to trigger the amp. Here is a wiring diagram so you can get it connected correctly:

I believe it is the serial port they hook it up to.

Please let us know what happens so it will help others.

Cheers, Ken
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Mar 31, 2021 at 5:38 PM
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CHAUNCEY730
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Yes the wires that came with the radio has 2 blues one says remote out put only and the other says steering wheel remote I have the remote output only connected to the power antenna on the harness
Mar 31, 2021 at 5:38 PM
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STRAILER
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The remote wire is the one you want to try
Mar 31, 2021 at 5:38 PM