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Re: My 04 Buick LeSabre power windows won't work think it...
If none of the windows work, chances are you have blown a fuse and\or relay. Check those first. If those are not blown, it may be the main switch that the driver (if applicable) uses. If only one window isnt working, it may be the window switch for that window, or if there are multiple switches for any given window (like volvos and other makes and models) and neither switch works for any givem window or any of the windows; for a single window, check continuity to the switch(es), as well as the window motor; for multiple window failure, you most likely have a blown relay.
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It's not the BCM. The BCM doesn't affect the ignition switch power. But the ignition switch will affect the BCM. I would look to see why you don't have power to the ignition switch first. Fuse or wire.
On a 1990 Buick you have a fuseable link between the headlight switch and the battery. Do you have power in and out of the headlight switch and the dimmer switch ?
Check fuse, try switch from other window as they do the same thing. You may need to remove the trim & power the window up manually to check motor works.
Given the amount of electronic's ( computers ) on your vehicle ,it could be a lot of thing's . Hooking up a factory or professional grade scan tool that can communicate with all the control modules on the vehicle should be the first step in the diagnostic problem . Checking for DTC'S - diagnostic trouble codes , communication between module errors etc.....
Your best bet , take it to a qualified repair shop that has the proper diagnostic equipment to check it out .
The power door lock system consists of the following components:
• Body control module (BCM)
• Driver door lock switch
• Front passenger door lock switch
• Door lock actuators in each of the doors
• Door lock system fuse into the BCM (BCM D 25A fuse)
BCM Functions
The body control module (BCM) is capable of accomplishing multiple body control functions. Components directly connected to the BCM are controlled by the BCM outputs. The BCM can control its outputs based on input information it obtains from sensors and switches that are directly connected to the BCM, or by receiving information from other vehicle systems connected to the class 2 serial data link. The BCM evaluates this information and controls certain body systems by commanding an output on or off.
The BCM is also capable of commanding other vehicle systems to control functions that are not directly wired to and/or controlled by the BCM. The BCM accomplishes this task by sending specific messages on the class 2 serial data link. The vehicle system capable of performing such function will respond to the BCM message.
The BCM controls/monitors the following functions:
• Audible warnings
• Indicators control
• Interior lighting
• Exterior lighting
• Power/automatic door locks
• Keyless entry
• Content theft deterrent
• Personalization
• Serial Power Modes
• Electrical Power Management
Hello,
Are you saying your window will not go up or down? Have you tested the window/lock switch panel or (motor control switch) on the door? They do go bad. Sometimes you can switch the switch with a good one from another door and see if it works. Or you can try using the master switch and if it works on another window then it may be that switch. If you are sure it is not the switch then the part you are inquiring about is refereed to as a window regulator which is the motor that powers the window track. The regulator and track are sold as one unit.
Regards,
Tony
The first thing the dealer would do is diagnostic's . Would not guess and just replace the BCM . Hooking up the factory Tech 2 scan tool an checking for DTC'S - diagnostic trouble codes , input data to the BCM etc.
(I have reason to believe the BCM in my 2000 LeSabre is bad ???? )you have no clue ! The BCM has nothing to do with gauges , insturment cluster ! Beside's you still would need to take it to the dealer because it would need to be programmed .
Leave this to a qualified repair shop . Plus the dash doesn't need to be taken apart to replace the BCM . Your vehicle actually has three modules for the body control system .
The body control system consists of 3 modules:
• The dash integration module (DIM)
• The instrument panel module (IPM)
• The rear integration module (RIM)
You have no idea what your messing with . Your best bet ,take it to a qualified repair shop ,and that doesn't always mean you need to take it to the dealer .
Each of the 3 body control modules integrate a number of functional systems under the control of a single module. Each of the modules is connected to the Class 2 serial data line. Many control signals are implemented by Class 2 messages.
Important: The air bag indicator light may remain ON after the DIM module is replaced, and during the programming procedure for the DIM, until after the procedure is completed and the ignition key is cycled OFF and ON .
• Before replacement, record the personalization settings to transfer to the new module (if they are available).
• After replacement of the DIM, perform the following procedure.
• In order to reprogram the DIM, perform the following procedure.
Using a scan tool, preform the New VIN Procedure.
Perform the Setup SDM Serial Number in DIM Procedure.
Using the scan tool, set the Point of Sale in the DIM module to the correct country.
Using the scan tool, configure the RPO option configuration.
Perform the vehicle personalization in order to reset the owner's desired personalization settings. Refer to Instrument Cluster, Gauges and Console.
Plus power door locks and windows are controlled by door module system , not body control system .The vehicle is equipped with power door locks. Each lock actuator is powered and controlled by the door module mounted in the individual door. The driver door module (DDM) is the master control for the door lock system but the rear integration module (RIM) contains the program that determines when the lock functions are permitted.
Mess with the wrong stuff an you will render your vehicle useless
cost to much to fix.
there is no solution.I have had 6 yes 6 windows that didnt work.You have to replace the motor and the control board.They wont sell you just the part you need.It will cost you 750 dollars from the dealer.It is a rip-off.This should have been a recall but they say it is not a safety problem.
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