What is the labor time to fix a bcm on a 2008 buick lacrosse?

Question edited for clarity and correct spelling of the maker.
Question moved to model category.

Nothing here leads me to think it has one! A/C is controlled by the BCM.

https://www.google.com/search?q=2006+Buick+Lacrosse+remove+the+A%2FC+control+module

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Not sure what you mean by 'Calibrate'? They get programmed. What you can do is have yours repaired.

https://www.upfix.com/product/buick-lacrosse-2005-2009-bcm-body-control-module/

If there is something else wrong with it, the cheapest alternative is a mobile auto electrician.

https://www.google.com/search?q=auto+electrician+near+me

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The average cost for a Buick LaCrosse heater core replacement is between $490 and $751. Labor costs are estimated between $457 and $576 while parts are priced between $34 and $175 .

Buick LaCrosse Heater Core Replacement Cost Estimate

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The back up lamps are computer controlled (BCM) . Very doubt full you will be able to fix . You have a factory or professional type scan tool ? Has bi- directional controls ( do you know what this is ?) The transmission internal mode switch is an input to the PCM - engine computer or TCM - transmission control module .The PCM or TCM,when it see's the transmission is put into reverse sends a serial data message to the BCM which turns on the back up lights . But here you go ,free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine size . Under system click on lighting ,under subsystem click on reverse lamps . Click the search button then the blue link . This for the lamp side of the circuit ,from the BCM . To see internal mode switch input to pcm you need look under transmission / transaxle .

There is no flasher, the noise you hear is synthetic and heard through the driver door speaker from the BCM computer module.

The park lamp relay contacts are stuck shut ,probably ! Do you know where the rear fuse box is ? Under the back seat . Check the relay first , if that's not the problem then the vehicles BCM maybe at fault .
The body control module (BCM) controls the park lamp relay through the park lamp relay control circuit. The BCM grounds the park lamp relay control circuit which energizes the PK LP relay.

An what would you like to know ? How to fix it , how to close it ? There are complex electronics involved , An if you are not familiar with these thing's I suggest you take to a qualified repair shop ! It should still be under warranty !
BATT MAIN 2 Fuse 50 A

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Body control module (BCM)

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RAP relay

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S/Roof Fuse 20 A

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Sunroof module (includes sunroof motor/actuator)

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Sunroof switch

call the parts store

WELL BUICK LACROSSE HAVE TIMING CHAIN.THE SERVICE SCHEDULES MAINTENANCE DONT GIVE NO TIME CHANGE.I SEEN TIMING CHAINS LAST OVER 100000 MILES OR MORE.IF YOU NOT A HARD DRIVER.TIMING STILL GOOD.CHAIN OKAY IF YOU HEAR CHAIN NOISES OR YOU NEED TO REPAIR FRONT TIMING COVER SEAL THEN REPLACE TIMING CHAIN.YOU BE THE JUDGE.IM NOT GOING TO TELL YOU NO OR YES.IF YOU GOT THE MONEY.WOULDNT HURT NOTHING.JUST THE COST AND LABOR..

it is a plastic piece the only way you will get one is the buick dealer/ The best people to contact is a auto body shop the reason being is the labor rate insurance rates prevail/ thats like pay either 44 or110.00 which one would you rather pay the 44.00 of course Please rate my response thank you very much it takes a couple of hours to do as well time wise