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Speakers not working after BCM replacement

BCM replaced. radio power is on but no power to speakers...no sound.

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  • 15 Answers

Bad pcm

Posted on Jan 17, 2013

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Posted on Jan 02, 2017

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SOURCE: power to radiio works ,but there is no sound

it very well could be the amp..

Posted on Dec 04, 2008

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SOURCE: 95 intrepid no sound from speakers

You can use freon in a 95 Dodge Intrepid but make sure to completely flush the R12 refrigerant first.
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a good tool

Posted on Dec 06, 2012

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Why is my 2008 chevrolet uplander's turn signal does not making clicking sound , but the signal lights are working.


Did you put a aftermarket radio in ? The clicking sound comes out the driver side speaker . It's generated by the BCM body control module .
Turn Signal Lamps
The STOP/TURN fuse in the instrument panel (I/P) fuse block supplies battery positive voltage to the body control module (BCM) for the turn signal lamps. When the turn switch is placed in the left or right position, ground is applied to the BCM on the left or right turn signal switch signal circuit. The BCM then applies voltage to the appropriate front and rear supply voltage circuits.
Grounds for the various lamps are as follows:
• G100 supplies the right front lamps
• G101 supplies the left front lamps
• G400 supplies the right rear lamps
• G401 supplies the left rear lamps

Your best bet would be to take it to a qualified repair shop before you start replacing parts , like the BCM ,which would need to be programmed at the dealer or other thing's will stop working too .

Aug 30, 2017 | Chevrolet Cars & Trucks

2 Answers

Where is the location for the relay turn signal 2007 cobalt


You won't find it because........there isn't one. The BCM (body control module) controls the flash. If you have no sound it could be a defective speaker.

Jul 01, 2016 | 2007 Chevrolet Cobalt Coupe

1 Answer

Where is my door chime located impala 2002


It comes through the radio an left front speaker .
The audible warnings alert the driver of a system concern or a critical vehicle condition. The radio generates the audible warnings through the left front speaker. The radio receives audible warning requests via the class 2 serial data line. If the radio receives multiple audible warning requests, the warning with the highest priority sounds first. The Multifunction Alarm generates the audible warnings on vehicles with RPO UL5 -- Radio Delete Option. The following lists the audible warning priority and the pulse rate:
The radio activates the door ajar audible warning as requested by the body control module (BCM). The BCM sends a class 2 message to the radio indicating the chime frequency of a medium rate and at a continuous duration. The door ajar warning sounds and the door ajar indicator illuminates when the following occurs:
  1. The body control module (BCM) determines that the driver's door is open and the signal circuit low. The IPC receives a message via class 2 from the BCM requesting illumination of the door ajar indicator.
  2. The vehicle is not in park. The BCM receives a class 2 message from the PCM indicating the gear position.
Class 2 Serial Data Link
The class 2 serial data link allows the following modules to communicate and share data with each other:
?€¢
Auxiliary Power Drop Connector


?€¢
Body Control Module (BCM)


?€¢
Driver Information Center (DIC)


?€¢
Electronic Brake Control Module (EBCM)


?€¢
Instrument Panel Cluster (IPC)


?€¢
Powertrain Control Module (PCM)


?€¢
Radio


?€¢
Remote Playback Device-CD Player (if equipped with UQ3)


?€¢
Inflatable Restraint Sensing and Diagnostic Module (SDM)


?€¢
Vehicle Interface Unit (VIU) (if equipped)

The class 2 serial data link allows a scan tool to communicate with the above modules for diagnostic and testing purposes.

Nov 16, 2015 | Cars & Trucks

2 Answers

My sister has a 2000 chevy cavalier b4 the door chime and the interior dome light worked now they both dont, we replaced the bulb and fuse to no avail and I have no clue what's wrong with the chime.


the chime actually is done with the radio. the front drivers door speaker. so if the radio works and the front left speaker works. then more then likely you have a defective door switch. located in the door jam that controls the dome light

Apr 20, 2015 | 2000 Chevrolet Cavalier

1 Answer

Short in electrical system?


when the radio is OFF sound comes out of the rear speakers when the blinkers are used ! There isn't a turn signal flasher on your vehicle ,( like most all newer vehicles ) It's done electroniclly by a control module . In the case of your vehicle , the BCM - body control module . It doesn't matter if the radio is off . All the Audible warnings come out of the radio speakers . Headlamps left on , key in ignition etc... You have no idea of the complexity of your vehicle , it's a rolling computer , with a serial data network for the modules to talk to each other , share info.
When the turn signal switch is placed in either the left or right position, a ground signal is completed from the turn signal switch to the BCM. When the hazard flasher switch is activated, a ground signal is completed from the turn signal/hazard switch to the BCM. The BCM then sends an ON-OFF voltage signal through the fuses to the appropriate turn signal and side repeater (export only) lamps or to all of the turn signal fuses for hazard operation.
Really don't think you have electrical short . Computer glitch maybe , radio problem . How ever , these system's are not for the untrained to mess with . Your best bet , the GMC dealer !

Aug 07, 2017 | 2010 GMC Yukon XL

1 Answer

05 malibu classic no radio sound sometimes


The bcm controls that device for the addition of features like blue tooth and hands free, on-star etc.

Apr 21, 2014 | Chevrolet Malibu Classic Cars & Trucks

2 Answers

My daughters 2006 Silverado appears to have a BCM problem, when you shut it off, remove the key and exit the truck the red battery symbol stays on, the radio and instrument light stay on for hours, the...


problem with the diagnosis is what caused it to go bad. bcm dont just die. make sure this is a garage that does this kind of work all the time. ask them to stand behind this diagnosis. if it dont fix it you dont pay. my garage does. i dont make a diagnosis and not guarantee it will fix the problem.

Jan 19, 2011 | 2006 Chevrolet Cobalt

2 Answers

Where do i start with the electrical problems on my 2003 tiburon. My parking lights started to just stay on or flicker on and off killing my battery, to where i had to start leaving them on permanately to...


I've had my '03 Tib's BCM replaced 3 times now. If you have the chip-in-key factory security feature, you can't use a second-hand BCM because it's programmed to your specific key.

I'm not aware of any cases where the BCM caused the speakers to crackle, but the parking light thing definitely sounds like the BCM.

Jan 18, 2010 | 2003 Hyundai Tiburon

1 Answer

Headlight left on warning not working, what should I look at?


Headlight on warning works through the radio and the Body Control Module (BCM). The BCM has an input from the lighting circuit and when it decides that the warning should turn on, it sends a class 2 serial data communications to the radio. The radio then sends a cime tone to the driver's front door speaker.

If by chance, you replaced the OEM radio with and aftermarket radio and did not install an interface module, you will be missing not only the headlight warning but many other warnings as well ( low oil / hot engine, etc.)

Nov 18, 2009 | 2002 Chevrolet Cavalier Coupe

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Just bought a 1999 Cadillac catera from the auction, both the buttons on the dash and remote are not able open the trunk and gas door. The radio is not working also. When I turn on the car, the light shows...


Just bought a 1999 Cadillac catera and i have a problem??
, both the buttons on the dash and remote are not able open the trunk and gas door. The radio is not working also.
What can I do?

Aug 14, 2009 | 1999 Cadillac Catera

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