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  • 1 Post By rbinck
  • 1 Post By tenryholnes

Any car/truck audio experts out there????

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Old 08-06-2018, 02:12 PM   #1
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Default Any car/truck audio experts out there????

OK here goes.

I have a 2007 Chevy Silverado Classic extended cab, a few years ago (5 I think) I replaced the speakers and radio with a better setup, worked great till about the start of summer this year.

The front door main speakers have quit working, (on both sides) but the separate tweeters on the doors work fine, if I turn the treble up I can hear them fine, the rear cab speakers all work fine, have checked the front/rear fader settings and all is normal, removed the door panels and tested the speakers (using a small portable radio) they work, and I don't see any type of water damage.

I can't test the radio harness to the speakers as I don't have a schematic to tell me whats what with the wires, however looking on line I see something mentioned about a speaker fuse for the front door speakers...

Great, but where are they????

Can't find anything on the location, if there are some, they should be accessible from somewhere right????

Help me Mr. Wizard your my only hope....I don't want to take it in, it would cost a bundle to look this problem down.
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Old 08-06-2018, 08:18 PM   #2
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Sounds like the tweeters have separate wires back to the radio rather than using the main door speaker wires.

I'd try to check the continuity of the door speaker wires from the speakers back to the radio. One of them must be bad or a blown fuse maybe. I don't have a clue where speaker fuses may be located, if there are any.

If you find one of the wires does not have continuity you could temporarily run a jumper wire. If they work then you will need to trace the wiring or run a new wire.

What radio did you put in the truck?
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Old 08-06-2018, 08:36 PM   #3
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A Sony, with blue tooth, the back speakers work fine, the front ones don't except for the tweeters, some say there is a fuse for the front ones in case of an accident, you wont blow the radio.

But I haven't been able to find a good schematic for this truck that shows anything as a fuse for the front speakers, but it does show that there is one output for L/R to the mains and then splits off to the tweeters, someone on another forum has access to the schematics for this year/model, will have to see whats what with them.
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Old 09-26-2018, 04:19 PM   #4
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The best way to test the speaker wires is to run a temporary speaker wire from the head unit directly to the speaker itself. There is no point ripping the wiring harness until you are sure the speaker wire is at fault. You will need to remove interior parts such as the door card to gain access to the speakers.

The use of a multimeter can also prove useful when testing for problems such as polarity. This can be achieved by switching to DC Voltage, which the best automotive multimeters should feature.
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Old 09-26-2018, 05:31 PM   #5
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Sorry guy's that I have not been back to this one, been busy elsewhere.

I found the problems to be a bad wiring job from the factory, (real cheap wires) where they connect to the door harness there is a connector, this connector was not properly secured, the wires being very thin broke loose right at the connector, this was found during a wire harness electrical test inspection. (known good audio source and known good speaker with test cables attached)

I ran new wires from the speaker's all the way back to the radio, this problem will never happen again for the life of this truck.


Thanks to all that helped and provided info.
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