Question about 2007 GMC Sierra 1500

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2007 cierra ,my radio cones on but not putting power to speakers except to 1 front speaker and it has almost no sound ,up full and very screechy . do I need a new radio ?

Nothing really , just tried to adjust speakers . Fade , left ,right . absolutly no sound to back speakers.Every now and then my front drivers speaker blurps out some sound . Does anybody know what causes this ? Going crazy with no sound in my truck . same thing happens when playing cd

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Hi Eric, I would suspect the multi-pin connector on the rear of the radio may not be seated properly. Even if some speakers are bad, you should hear something coming out of them. Make sure you have a good ground connection to the chassis/frame of the radio. The color scheme for the wires that I have for my 2003 radio multi-pin connector going to the speakers are: Left Front (-) GRY, Left Front (+) TAN, Right Front (-) Dark GRN, Right Front (+) Light GRN, Right Rear (-) Light BLU, Right Rear (+) Dark BLU, Left Rear (-) YEL, Left Rear (+) BRN. Not sure if it's the same for your 2007.
You can probably get the info from a Haynes Repair Manual to confirm. Once you know what the colors are you can pull the connector and check the speakers with a Digital Volt Meter (DVM) on the low Ohms scale to see if they're working, shorted or open.

Posted on Jan 05, 2015

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Sounds like a wire is shorting out, probably in behind the stereo, but more likely in the back where the speakers connect. Check for something shorting out or a wire grounding out near the speaker.
You can trace back from there.
Other than that probably is the stereo.

Posted on Dec 02, 2014

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  • 26 Answers

Put speakers in it. .. If u have a test speaker, try it.. just about guarantee the speakers are bad

Posted on Dec 01, 2014

Testimonial: "Thats fine but all 6 speakers dont go bad at once"

  • rick wilber Dec 01, 2014

    I work at a gm dealership and I've had it happen.

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Posted on Jan 02, 2017

techprogrami
  • 57 Answers

SOURCE: No sound comming from the left side speakers in my 04 Envoy XUV.

first> road vibrations can cause cable connections to come loose so you can start by taking out your radio and making sure all of the questions in the back are connected as they should be.
Second> if this doesnt seem to work then the next step is to check the wires going to the speakers that arnt working (this will b quite a job, but if you can do it, it will save u quite a bit of money) .. checking the wires your checking for >bad connection to the speakers >cuts in the wire or if any part of the wire is touchin any other metal object

Was This Helpful ?

Posted on May 29, 2009

  • 43 Answers

SOURCE: back speakers are not on my 2005' Envoy

not sure which radio you have but there is an amplifier under the back seat and there are some fuses there you may want to check your owners manual for fuse information

Posted on Jul 19, 2009

  • 205 Answers

SOURCE: 2002 Yukon XL with Delco Stereo only has front

sound like the head unit's out put mosfet is going bad, but i have also ran in to this problem when it was a speaker wires shorting out. so first check the connection on your rear speakers.

Posted on Oct 15, 2009

  • 236 Answers

SOURCE: the front door speakers are

The door chime is played over the speaker. I had the same issue the speaker was junk. The circuit resistance was correct but no tunes. Replaced the speaker with one from the junk yard and sounds great all the time.

Posted on May 09, 2011

jerzeyboy196
  • 4 Answers

SOURCE: 2007 gmc acadia speakers don't work

1st check fuse for Amplifier.

2nd if fuse is good, most likely the Amp has died. Common for GMC

Posted on Aug 25, 2012

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