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Don 'Mo Lurch'
Don 'Mo Lurch', Buick Mechanic
Category: Buick
Satisfied Customers: 20525
Experience:  GM, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
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I have a 2008 Buick LaCrosse all 4 door locks have a problem

Customer Question

I have a 2008 Buick LaCrosse all 4 door locks have a problem sometimes they lock some tomes they dont
Submitted: 6 months ago.
Category: Buick
Expert:  Don 'Mo Lurch' replied 6 months ago.

sorry for the delay............
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Greetings...... “Hi, I’m Don (aka MOLurch) and I look forward to helping you!”
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The Power Door Lock System is controlled by the body control module (BCM)

When the body control module (BCM) detects a transition of either of the door lock switches to the lock position, it switches the door lock actuator lock control circuit to voltage. Since the lock actuator unlock control circuits are at ground potential within the BCM, the door lock actuator motors transition to the lock position.
Since the BCM has Internal Relays for the Lock & Unlock, use of GM Dealer Scan Tool or equal is needed to Test & Program
apprx 1 hour labor
There is no customer Input, but to test Voltage at each Door Lock Actuator & check connections

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Expert:  Don 'Mo Lurch' replied 5 months ago.

did you need more info?
please respond or rate my answer

thank you

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