Question about 2003 Chevrolet TrailBlazer

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Locked out - 2003 Chevrolet TrailBlazer

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  • Anonymous May 17, 2009

    driverside door want work any thing, and dome light want come on when you open the driverside door

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Service Engen soon

Posted on Jul 30, 2008

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"Break the window"

Posted on Jul 27, 2008

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Why does my 2004 Chevy Silverado lock and unlock while in drive? When turned off and no keys in ignition the drivers door will unlock on its own a short time later.


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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The rear door lock switch

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The door lock relay

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The door unlock relay

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The liftgate lock relay--utility vehicles with liftgate only

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The reversible door lock actuators in each of the doors and liftgate

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LOCKS 20A fuse (rear lock/unlock relay supply voltage)

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ECC 10A fuse (liftgate lock relay supply voltage)

Door Lock System Controls
The power door lock system can be controlled by any of the following:
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A power door lock or unlock switch activation

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A keyless entry transmission

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An automatic door lock function

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A delay lock function

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Door lock cylinder switch activation

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Lockout Prevention

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An airbag deployment

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:
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The DDM (driver door lock actuator).

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The PDM (passenger front door lock actuator).

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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

Sep 16, 2015 | Cars & Trucks

1 Answer

Door lock dont always work


What door lock doesn't always work ? One or all of them . This is a complex set up for these door locks ! The switch is an input to the BCM - body control module . There is logic involved in the microprocessor , there are relays built in to the BCM ! Could have a DTC - diagnostic trouble code stored in the BCM ! Could be a bad connection at the BCM or master window switch ! A bad ground !
The power door lock system consists of the following components:
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Body control module (BCM)


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DOOR LKS fuse


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Driver door lock actuator


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Driver door lock switch


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GMLAN serial data link


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Keyless entry transmitter


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Passenger door lock actuator


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Passenger door lock switch


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Remote control door lock receiver (RCDLR)


The DR LCK fuse supplies battery voltage to the body control module (BCM) for the power door lock system. The BCM supplies and monitors a reference voltage to the driver and passenger door lock switches through the door lock switch lock/unlock signal circuit. Each door lock switch receives ground at G300 which is also the ground for the door lock and unlock relays located in the BCM. When a door lock switch is placed in the lock position, the reference voltage is switched to ground and the BCM senses 0.0 volts on the door lock/unlock signal circuit. When a door lock switch is placed in the unlock position, the reference voltage is switched to ground through a 1.5k ohm resistor that is internal to each of the door lock switches and the BCM senses approximately 2.9 volts on the door lock/unlock signal circuit. The BCM interprets what position the activated door lock switch was placed in based on the voltage drop.
The BCM, upon receipt of a lock or unlock switch signal, will switch the appropriate door lock/unlock relay coil control circuit to ground causing the appropriate door lock/unlock relay to energize. With the relay energized, voltage is applied to the door lock actuator control circuit causing the door to either lock, or unlock depending on what command was received from the power door lock switch or remote control door lock receiver (RCDLR). When a power door lock/unlock relay is not energized, the switch contacts are normally grounded through the BCM which provides ground to the appropriate door lock actuator for the lock/unlock function being performed. The power door lock/unlock functions are performed by reversing the flow of voltage through the door lock actuator control circuits. The BCM has three internal drivers for the power door lock system. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked separately from the passenger door. For additional information concerning keyless entry, refer to Keyless Entry System Description and Operation.
This is one you may want to take to dealer or some other ASE certified repair shop ! To do this right you need a Tech 2 scan tool !
Ignition ON, observe the scan tool Door Lock Switch parameter while using the driver and passenger door lock switches. The parameter should change from Idle to Lock and Unlock.
?‡'
If the value does not change, refer to Door Lock Switch Malfunction.

Command the doors to LOCK and UNLOCK with the scan tool, the door lock actuators should LOCK and UNLOCK when changing between the commanded states.
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If one or more doors do not LOCK or UNLOCK, refer to Door Lock Malfunction.

Aug 12, 2015 | 2009 Pontiac Solstice Convertible

2 Answers

What causes a malfunction in power locks?


The power door locks are controlled by the BCM -body control module ! The door lock switch is an input to the BCM .
The BCM, upon receipt of a door lock switch lock or unlock signal, will switch the appropriate door lock actuator control circuits to battery positive voltage. The opposing side of the door lock actuators are connected to ground internally within the BCM through the other door lock actuator control circuit and the doors will lock or unlock appropriately.
First thing to do would be check power an ground circuits at the BCM ! Do you have any other systems not working -power windows etc...
The DR/LCK fuse supplies battery positive voltage to the I/P fuse block for the door lock system. The body control module (BCM) supplies and monitors a reference voltage to the door lock switch through the door lock switch lock/unlock signal circuit. The door lock switch also receives a constant ground source. If a door lock switch is placed in the lock position or unlock position, the reference voltage is taken directly to ground and the BCM detects the voltage drop on the signal circuit.
Should have BCM checked for stored DTC'S - diagnostic trouble codes !
Ignition ON, observe the scan tool Driver Door Lock Sw, Psgr Door Lock Sw, Driver Door Unlock Sw and Psgr Door Unlock Sw parameters while using the driver and passenger door lock switches. The parameters should change between Active and Inactive.
?‡'
If the values does not change between the commanded states, refer to Door Lock Switch Malfunction.

Command the driver door and passenger door lock actuators to LOCK and UNLOCK with the scan tool, the doors should LOCK and UNLOCK when changing between commanded states.
?‡'
If a door lock actuator does not perform the LOCK and UNLOCK functions, refer to Door Lock Malfunction


DTC B3130 00: All Door Unlock Circuit

DTC B3135 00: All Door Lock Circuit

Aug 09, 2015 | 2010 Chevrolet Impala

1 Answer

Automatic door locks delaying in locking.


It can be issue with keyfob or door locking mechanism.

Check the help link mentioned below:---

How to test Power door locks?

http://repairhelpcenter.blogspot.in/2012/02/how-to-test-power-door-locks.html

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2006 Toyota Camry: Power Door Locks Not Working?

http://whatisbyme.blogspot.in/2012/05/2006-toyota-camry-power-door-locks-not.html

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Door locks or windows not working on car?
http://schematicsdiagram.blogspot.com/2011/07/door-locks-or-windows-not-working-on.html


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All power door locks not working on Honda Accord?
http://howtobyme.blogspot.com/2011/11/all-power-door-locks-not-working-on_14.html

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Repairing car Door lock Actuator?
http://howtobyme.blogspot.com/2011/11/repairing-car-door-lock-actuator.html

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How to Access car door panel?
http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html
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Vehicle door panel components?
http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html

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Power door locks not working?

http://schematicsdiagram.blogspot.com/2011/12/power-door-locks-not-working.html

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Door locks not working on Ford Explorer?

http://technoanswers.blogspot.com/2012/01/door-locks-not-working-on-ford-explorer.html

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These details will help.
Thanks.

Dec 06, 2012 | 1995 Chevrolet G20

1 Answer

Hi all, the central locking on my bmw z3 does not seem to work this morning. Both door locks accept the key with force although do not seem to turn - Stiff, akward movement within the lock. The boot lock...


First try lubricating locks with powdered graphite. Avoid ALL liquid lock lubricants. Then work locks through all positions from passenger door. (single lock positions & double lock position) Lastly operate locks via boot lock.

Mar 14, 2011 | 1998 BMW Z3 Roadster

1 Answer

Door lock assembly


Toyota Corolla 1988-1997 Repair Guide Door Locks - REMOVAL & INSTALLATION
(see Figure 1)
  1. Disconnect the negative battery cable.
  2. Remove the door panel and watershield. Remove the service hole cover.
  3. Disconnect the door outside opening linkage. Remove the two mounting bolts and remove the door handle if in need of replacement.
402f2b0.jpg

Fig. 1: Power door lock control system component locations
  1. Disconnect the lock cylinder control linkage.
  2. Remove the lock knob and the child protector lock lever knob.
  3. Remove the lock assembly retaining screws and remove the door lock. If equipped with power locks, disconnect the electrical harness.
  4. To remove the lock cylinder, remove the lock cylinder retaining clip and pull the cylinder from the door.
To install:
  1. Coat all the door lock sliding surfaces with multi-purpose grease.
  2. Install the outside handle with the two retaining bolts, if removed.
  3. Install the door lock solenoid linkage to the door lock.
  4. Connect the link to the outside handle.
  5. Install the lock knob and the child protector lock lever knob.
  6. Install the door opening control link tighten the mounting bolts to 48 inch lbs. (5 Nm).
  7. Install the door lock cylinder control linkage.
  8. Install the door panel and watershield.
  9. Reconnect the negative battery cable.

Hope help with this; remember rated this post and thank you for using Fixya.

May 20, 2010 | 1991 Toyota Corolla

1 Answer

2004 Camry front driver door lock will only lock/unlock with key, the remote and lock button locks and unlock all locks fine except for the front driver side door lock. You have to either use the key or...


Remove the door panel and reconnect the plug going to the front driver door lock or, if you can hear the motor trying to engage the door lock cam when you press the lock/unlock remotereconnect the door lock lever bar

Jun 09, 2009 | 2004 Toyota Camry

1 Answer

Central Locking


When you use your remote or insert your key in the Drivers Front door all the door locks should work at the same time by the door lock motors electrically. If you have to manually unlock the door because it will not lock or unlock by the lock motor, you need a door lock motor. The drivers and passengers front door can unlocked with the key manually. The rear doors you have to pull up the latch. If no doors unlock electrically with the remote or drivers door lock, intermittantly or all the time, you will need a Central Locking Electronic Control Module. You will hear the "beep" but no door locks will fire at all. If you have odd door locks not working intermittantly you need a new door lock motor for each door lock that malfunctions. You can hear of the door locks are working electrically. Yes, they are common problem. If you can hear the door lock working but the door still doesn't unlock you need to take the door panel off and lubricate the door latch assembly and work the lock, loosening it up. This is common as well.

May 30, 2009 | 1996 Saab 900

1 Answer

1998 Jeep Cherokee Internal locks and power locks Not working.


Open the door panels and lube all of your lock mechanisms. They tend to get stuck and it harms the locking motor. After I lube mine up, they freely move. Just spray some lithium grease and manually lock and unlock the door with the rocker until it moves very easily. You'll probably have to do this once a year like I do.

Oct 21, 2008 | 1998 Jeep Cherokee

1 Answer

Vw polo gti boot lock


try locking the car then disconnect the boot lock. then unlock the car and reconnect the boot lock,it sounds as though its out of sinc with the rest

Sep 09, 2008 | 2000 Volkswagen GTI

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