Question about 2004 Chevrolet Venture Passanger

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The power locks do not work from the driver side door. This is the only way we can unlock the doors. What do we do?

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First check for a blown fuse. On the driver side door you take the panel out move the lock up and down u will see a connecting rod going down their is a relay or switch connected at the end that might not be working

Posted on Jul 24, 2009

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1 Answer

Driver side door will not lock/unlock with the remote, but the other doors will.


no you needs a new lock actuator on that door its about $90 installed,
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Gremlins ! HA HA HA sorry ! First off a little bit on how they work an what all is involved in making them work ! There are a few control modules in the mix , switches ,relays etc...
Door Lock System Components
The power door lock system consists of the following components:
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The driver door module (DDM)

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The passenger door module (PDM)

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The body control module (BCM)

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The driver information center (DIC)

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Door Lock System Controls
The power door lock system can be controlled by any of the following:
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The front power door lock switches are integral components of the driver door module (DDM) and passenger door module (PDM). The switches are two position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDM or PDM. The DDM or PDM monitors these inputs and sends a Class 2 message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the Class 2 message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The rear door lock switch provides a lock and unlock signal to the body control module (BCM). The BCM upon receipt of a lock or unlock signal will control the rear door lock relays and also send a Class 2 message to the DDM and PDM to perform the appropriate function.
The modules which activate the power lock motors are:
?€¢
The DDM (driver door lock actuator).

?€¢
The PDM (passenger front door lock actuator).

?€¢
The BCM (both rear door lock actuators and cargo door/liftgate).
The DDM and PDM are directly connected to the respective door lock actuator through the door lock motor lock and unlock circuits. Once a door lock or unlock request has been received, the module will supply battery voltage to one side of the actuator and ground the other causing the doors to lock or unlock.
The rear passenger and cargo doors differ slightly in that they use lock and unlock relays. The relays supply and coil sides receive a constant voltage through the battery voltage supply circuit. The normally closed contacts are connected to ground and the control side is connected to the BCM. Once a door lock or unlock request has been received by the BCM, the BCM will ground the control side of the appropriate relay. This energizes the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.
The first place to start is have a factory or equivalent scan tool hooked up , one that can read BCM DTC'S - diagnostic trouble codes ! This could lead to a fix faster ! Watch these three videos !
Door Locks Go Crazy 1

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1 Answer

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1 Answer

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1 Answer

Similar electrical issues with driver's side door controls. Power locks, power window, and power mirror on driver's side are not functioning. I can manually unlock the door, but the buttons on...


CHECK FUSES FOR POWER WINDOW,CHECK FUSE FOR POWER MIRROR AND CHECK FUSE FOR POWER DOOR LOCK.IF FUSE OKAY DOOR CONTROL MODULE FAULTY ITSELF.

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1 Answer

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2 Answers

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Press the passenger side door lock button. if the driver side door unlocks now but wont unlock when you hit the driver side door lock button, it is usually a network communication problem with the B CAN or a faulty Body Control Module.

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2 Answers

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is the lock mechanism siezed,or is the linkage disconected?

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