Question about 1998 Chrysler Concorde

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Body Control Module doesn"t work properly

We have installed a salvaged body control module and everthing seems ok except it won't allow the car to start. We think it is a security problem but we can't seem to shut off the security.

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  • robertsmith Jun 26, 2009

    Doesn't do me much good

  • robertsmith Jun 30, 2009

    Its sure worth a try and maybe makes some sense as obviously if you can set security you must be able to shut it off.

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I believe you mean the car cranks but won't run? Remove negative battery pole and wait a few minutes, then reconnect and try starting. If not, please describe your problem a little more in details. Make sure you check all fuses.

Posted on Jun 30, 2009

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When a body control module is replaced it must be programmed to recognize the unique chip key transponder code, this reprogramming of the security function of the module can only be done at the dealer as it requires special equip that only the dealer has.

Posted on Jun 26, 2009

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1 Answer

2006 Dodge Dakota 4x4 SLT Body Control Module location


I have a manual for a 2004 Dakota that is probably similar to the 2006 electrically. Dodge never called it a Body Control Module; earlier models did have the Central Timer Module (CTM) which functioned like Body Control Modules in other manufacturers vehicles.
In 2004, the CTM was replaced by the Integrated Power Module (IPM), which consists of the Front Control Module and Power Distribution Center, and is located next to the battery on the left inner fenderwell (the Front Control Module is underneath the Power Distribution Center, where you will find relays and fuses). There are several other modules which control various functions, and they communicate with each other through the Programmable Communication Interface (PCI) bus circuit, also called J1850.
The Front Control Module controls all exterior lights, except brake lights and turn signals, and the windshield wiper functions. Other modules (PCM, TCM, antilock brakes, heated seats, instrument cluster, power locks/power windows/power mirrors, etc) control other functions, but all communicate through the PCI bus.

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I have a 03 envoy xl and replaced the old body control module with a used on how do I reset it?


It has to be programmed for sure if it can be used at all . Most GM vehicle do not allow used BCM'S . It will lock up with out proper vin number an anti-theft system information installed . Your best bet is call the dealer or an independent mobile technician in you area that does reprogramming . If I may ask what kind of problems were you having that makes you think the BCM needed to be replaced ? Was a Professional type scan tool used to see if the BCM was able to communicate ? Were power an grounds checked ? Fuse's etc... I see it a lot working at the dealer , not just GM vehicles either . Customer changed out module when it didn't need it.
If installing a replacement BCM, program the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration .
An you need a subscription on GM web site , GM scan tool or a J-2534 Pass-through Device programming tool .
The procedures below are designed to set-up the body control module (BCM) correctly during BCM related service. Before you start, read these procedures carefully and completely.
Important: The following procedures must be followed:
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  2. Programming Theft Deterrent System Components, if equipped with Passlock System
  3. Relearn Restraints ID
If you don't understand what this guy talks about , you really need to take it to the dealer.

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www.rockauto.com/catalog/x,carcode,1353619,parttype,2888
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blazerforum.com > ... > 2nd Gen S-series (1995-2005) Tech
Oct 25, 2009 - I have seen on line it could be the bcm module. ... In my 1999 Chevrolet Blazer it is located under the cd/radio and computer climate control. Looking for a Diagram or Info on the Body Control Module
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Where is the body control module located?


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How would you replace a BCM, Body Control Module


Preliminary Procedure Remove the knee bolster. Refer to Knee Bolster Replacement
1
Body Control Module
Tip
  1. Remove the BCM cover.
  2. Disconnect the electrical connectors.
  3. Press on the tabs to release the body control module.
  4. If a replacement module is installed, program the module. Refer to Control Module References .
  5. A new body control module (BCM) must be programmed with the latest operating software and vehicle calibrations. Ensure that the following conditions exist in order to prepare for BCM programming:
  6. The battery is fully charged.


    ?€¢
    The ignition switch is in the ON position.


    ?€¢
    The data link connector (DLC) is accessible.


    ?€¢
    All disconnected modules and devices are connected.


    Programming the BCM
    Important: The vehicle will not start and many other functions may not operate properly if a replacement BCM is not properly set up. The following procedures must be followed:

    1. Programming the BCM
    2. Learning the restraints ID
    Important: After the procedure is completed, the personalization settings of the BCM are set to default settings. Inform the customer that the personalization must be set again.
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Where is the body control module 2002 buick rendezvous


the body control module is under the radio. the center console plastics must be removed and it is in a clamp like bracket behind the floor shifter. quite a bit has to be removed. keep in mind that gm locked the bcm so you cannot use a used or salvage bcm because only very high end tech 2 scanners might be able to get in to program it and without programming the windows wont go down and the radio wont work.

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1 Answer

05 Impala, first my clock went crazy. Today it won't start and it makes a hissing noise when I try to start it. I've heard clicks but NEVER this noise. I seem to smell a chemical odor also. I've never...


Sounds like a body control module problem, they fail quite frequently on those cars. You first need to check the battery and the connections if you have not done so already. If that is ok then the next step would be to use a diagnostic scan tool and test for codes in the body and powertrain systems, they will usually point to where the problem is. This would also show if the body control module is failing when the problem is occurring, by seeing if the scan tool can communicate with it. If there is no communication the the body module is the failure. This module is very easy to change, but has to be programed with the proper equipment.

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1 Answer

My wipers won't work windows won't roll up or down


body contol module problem find a shop you can trust a used bcm can be installed but then you have the problem of the radio not receiving the vin number from the control module so you still have a problem with the radio buy the radio and bcm used from salvage and go through the mechanic to purchase it. I know my mechanic paid 65 dollars for the bcm 2002 buick rendevous and the salvage will sell me the radio that matches for another 65 and my mechanic charged me 125 diagnostic plus time to install be prepared for a lighter wallet.

May 20, 2012 | 2008 Chevrolet Malibu Classic

1 Answer

2004 chevy malibu ignition switch


How would you like it if you replaced the switch an that wasn't the problem ? That is very possible without knowing for sure if that is the problem . Testing the electrical supply to the switch an out of the switch is the proper way to diagnose this problem. Plus the ignition switch is just a input to the BCM - body control module . The BCM is really in charge of what mode to put the vehicle in . Your best bet , take it to a qualified repair shop .

The body control module (BCM) has a bussed electrical center integrated into the housing. Body control relays and fuses are installed directly on the BCM, which simplifies wiring and junction blocks on the vehicle. The body control system consists of the BCM and its associated controls. Battery positive voltage is provided to the BCM from IBCM BATT 1 fuse and the IBCM BATT 2 fuse in the underhood fuse block. The module grounds are wired to ground G201, G203 and G305. The BCM is wired to the GMLAN High speed serial data buss, and the GMLAN Low speed serial data buss, as well as discrete input and output terminals to control the functions of the vehicle's body .
Serial Data Gateway
The body control module (BCM) in this vehicle functions as a translator between the High and Low speed GMLAN busses. The 2 communication protocols use the BCM to translate communicated serial data messages between the control modules over the 2 serial data busses.

Normal vehicle serial data communications and the control modules operations will not begin until the system power mode has been identified. Discrete wires from the ignition switch contacts are monitored by a module which acts as the power mode master (PMM) in order to determine the correct power mode. The module which is the PMM communicates the system power mode to all modules on the serial data lines. Refer to Body Control System Description and Operation to identify which module is the PMM and the applicable power mode look up table.

The one that said you may need an ignition switch has no clue as to what's up !
Install a scan tool.
Turn OFF the ignition.
With a scan tool, under Vehicle Control Systems, Computer/Integrating Systems, BCM Data menu observe the Power Mode parameter.
Does the displayed power mode parameter match the actual ignition switch position?
Go to Step 2
Go to Step 6
2
Turn the ignition switch to the UNLOCK position.
With a scan tool, under Vehicle Control Systems, Computer/Integrating Systems, BCM Data menu observe the Power Mode parameter.
Does the displayed power mode parameter match the actual ignition switch position?

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1 Answer

I have a 1998 Dodge Grand Caravan 3.8L with 125,360 miles on it.Healights, cluster gages do not work, hazard, turn signals and horn do not work. Car starts fineand car runs. I have checked relays but am...


it is going to be the cluster or the body control module. And with out seeing it I am almost certain it is the body control module . Are your door locks all working ? dodge uses the body control module it is like a computer brain and it controls everything electrical inside the cabin is the easiest way to explain. Its best to buy one from a dealer because they have to program it before it is installed. One thing you can do is go to the dealer or shop with chrysler scanner and have them check the body control module and the cluster. nothing else .

Jun 04, 2009 | 1997 Dodge Caravan

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