Can anyone tell me why the door speakers in a 2007 gmc sierra keep cuttn In and out. Now only one plays

Could be a defective head unit, or the speakers are blown. You would have to remove the headunit to be able to test the speaker system.

its likely the speakers, it seems many trucks are heaving issues with the stock speakers. i would get aftermarket ones. you could take the one that plays and plug it in where the bad one is to be sure.

Justin, I was thinking of having him just pull the headunit, disconnect the connector and use a AA 1.5 battery with 2 wires. Find the pins to the correct speaker, quick connect, if you hear a thump, speaker is good. Then goto the next pair.

Much easier than pulling door panels IMO.

Thx alot gang I'll look into its just frustrating try to get ya sound str8 and everything seems to go wrong

battery will sometimes still produce sound even on a blown speaker, the reason i said its likely the speaker is because i believe i saw a tsb or recall for the newer trucks for the speakers going out

just fyi this is the tsb i think i was thinking of however doesnt apply here because it would take out all your sound. i have read lots of posts about the oem speakers on this generation truck being junk and having to be replaced, thats why i said i would go with aftermarket ones, better cost and far greater quality.

Instruments/Audio - No Speaker Audio/Warning Chimes

Bulletin No.: 07-08-44-008

Date: April 18, 2007

TECHNICAL


Subject:
No Audio/No Sound Heard from Radio Speakers, Turn Signals, Hazard Signals and No Warning Chimes When a Door or Liftgate is Opened (Inspect/Seat C2 Audio Amplifier Connector) Models:

2007 Cadillac Escalade, Escalade ESV, Escalade EXT
2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007 GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL

with Speakers, Premium Audio w/Amplifier or Rear Stereo Audio (RPOs UQA, UQS or UK6)



Condition

Some customers may comment on one or all of the following conditions related to no audio/no sound:

No sound from one or more of the radio speakers.

No blinking sound heard form the turn signals or hazard signals when on.

No audio warning chimes heard when a door or liftgate is opened.



Cause

The C2 Audio Amplifier Connector may become unseated at the amplifier.



Correction

Inspect/Seat the C2 Audio Amplifier Connector (16-way, Black Connector).

Remove the radio, amplifier, and SIR fuses located in the Underhood Bussed Electrical Center (BEC).







graphic


Gain access to the radio speaker amplifier. Refer to Radio Speaker Amplifier Replacement in SI.


graphic


Visually inspect and pull on the C2 Audio Amplifier Connector (1).

If the connector is properly seated, then refer to SI for further diagnosis based on the customers condition.

If the connector is loose, then reinstall the C2 Audio Amplifier Connector.

Verify the connector is seated and locked into place.

Install the fuses.

Verify the condition has been fixed and clear any DTCs.

If securing the connector does not correct the condition, refer to SI for further diagnosis and repair.

Install the radio speaker amplifier assembly and any other components removed to gain access to the amplifier. Refer to Radio Speaker Amplifier Replacement in SI.

Read more: MY SPEAKERS ON MY 07 SILVERADO GO..WIRING..PARKING BRAKE..ON. - JustAnswer http://www.justanswer.com/chevy/3ym1...#ixzz1qtqkXuIf