Question about 2004 Chevrolet TrailBlazer

2 Answers

The in side lights come on and off when the vehicle is off and the door locks unlock and lock on there own. so the battery runs down,got new battery and alternator dont know what else to do can you please help thank you

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  • diana atkinson Nov 13, 2010

    also i have a electric start on the vehicle

  • diana atkinson Nov 16, 2010

    there was a small box under the dash board that had something to do with the seceruty system

    not sure but it was bad so we think that was what it was. unhooked it and the pull amp went down to .01 so will just have to wait and see

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2 Answers

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  • Master
  • 1,796 Answers

Hi!!
It seems like you have a loose or insulator peeled wire rubbing against the chassis somewhere that is shorting out the door locks and courtesy light circuits. Or a defective door lock relay. The only place I can think of where the two circuits are together is at the doors. I would bet that is on the driver's door where the problem is because is the door most used. So start by checking the door lock relay, swap it with another one of the same characteristics on the fuse box, if it is ok, remove the door locks fuse and check if the problem persists, if it does, then remove the courtesy light fuse and check again, this way you'll be able to identify which circuit is causing the problem. Also check the wiring to the door light switch on the door jamb. check the harness going into the door for peeled insulation or broken wires.
Good Luck! keep me posted.

Posted on Nov 13, 2010

  • Rene J Solis Nov 16, 2010

    There you go, the security module also controls the locks and courtesy lights. Make sure there are no hot wires loose under the dash, where the module is/was. If you are going to deactivate the security module or if you plan in fixing it. You may want try an Auto Alarm Shop first, live the dealer as a last resource, they should be able to fix it for you faster and for a fraction of the price.



    Good Luck!!

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  • Master
  • 10,865 Answers

Hi. Your vehicle has one or more shorts causing these symptoms. These shorts are difficult to isolate and fix without lots of expensive diagnostic equipment. I recommend that you look in the yellow pages for a nearby AutoElectric Repair Shop. These shops are equipped to find electrical problems in modern cars and then repair them. It will be money well spent, I assure you. Joe

Posted on Nov 13, 2010

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I have 2005 chevy tahoe my doors all licks but my liftgate door with window stays open use to lock w all my doors? I havent check anytjing yet? I cant lock it.


Here is how it works !
Liftgate Locking Operation
The lift gate will lock any time the vehicle is shifted out of park on vehicles equipped with an automatic transmission and at vehicle speeds exceeding 5 kph with manual transmission. This happens in conjunction with auto door locks if enabled or independently of auto door locks if the feature is disabled. This ensures that the lift gate is locked anytime the vehicle is shifted out of park or when the vehicle is in motion.
The lift gate lock relay supply and coil sides receive a constant voltage through the battery voltage supply circuit and the ECC fuse. The normally closed contact is connected to ground and the control side is connected to the body control module (BCM). A lock function will occur when a door lock switch activation, keyless entry lock transmission, auto door lock function or a lift gate lock function has been received by the BCM. The BCM will then ground the control side of the lift gate lock relay. This energizes the relay and allows voltage to be applied to the lift gate lock actuator lock control circuit. Since the other side of the lift gate lock actuator is connected to the normally closed contacts of the door unlock relay to ground, the lift gate will lock. When an unlock function occurs the BCM will ground the control side of the unlock relay and the rear doors and lift gate will unlock.
The BCM also runs diagnostics on the lift gate lock relay control circuit and will set DTC B3825 as current and also send a Class 2 message to the DIC. The DIC will display REPLACE LIFTGATE FUSE to inform the driver that a fault has been detected in the lift gate lock circuit and that the lift gate is not locked. Faults that will set the DTC and cause the DIC to display the message could be any of the following:
?€¢
An open ECC fuse


?€¢
An open or short to ground in the lift gate lock relay battery positive voltage circuit


?€¢
A faulty lift gate lock relay


?€¢
An open or short to ground in the lift gate lock relay control circuit


?€¢
A short to ground in the lift gate lock actuator lock control circuit


?€¢
A faulty BCM

May 14, 2016 | Cars & Trucks

1 Answer

Can the immobilizer or central locking be switched off in a Nissan Almeria 2001 car?


you can remove the central locking fuse , this will stop the lock/unlock constantly , the problem is usually with the drivers door lock mechanism , that is perhaps why you cant lock/unlock with the key, lock from inside vehicle and get out passenger side, that lock should work with the key until you get the lock changed on drivers door

Jun 11, 2015 | Nissan Almera Cars & Trucks

2 Answers

No electric power to left door Fuse and relay are good


Check the wire lume that runs from the body to the door inside a rubber bellow. the wires can break from constant moving and I'm not sure what vehicle you have, but this is a defect for a few vehicles out there the wire can be to short in some cases from cost saving manufacturing. It may be necessary to remove the door panel and remove the harness through the wire opening to be able to move the boot far enough to access the broken wire or even just to check it in some cases.
How I like to repair it, is to put a new wire through the entire pivot point and join it inside the door and body where the wire does not move constantly.

Hope this helps

Mar 04, 2015 | 2007 Saturn ION-2 Quad Coupe

2 Answers

My keyless entry for my 2008 Volvo s 40 won't work. I've tried replacing the battery but it still doesn't work. Anything I may can do before spending money on a new key.?


How are you trying to open the door , button on key fob ? With this system you can pull up on the drivers handle an it activates Antennas in the external side door handles (C30/C70 front doors, S40/V50 rear doors)
  • Antennas in the passenger compartment and cargo compartment
  • An antenna in the rear bumper
  • Quick lock motors in the lock units in the side doors
  • The remote keyless entry (RKE) receiver receives a signal from the key
  • The switch in the clutch pedal (manual transmissions) or a signal from the brake pedal switch via the central electronic module (CEM) (automatic transmissions)
  • Key-in switch.
  • Switch in door handle and lock button on handle .
    If a door handle is pulled outward, a switch closes that wakes up the system and activates the antennas in the handles on the side where the handle has been pulled out. If a valid key is within a radius of approx. 1.5 metres from the handle, the relevant door will open and the vehicle will unlock one or several doors. Which doors are unlocked depends on the settings for the system. The vehicle can also be unlocked if the handle is affected on the tailgate.
  • Jan 29, 2015 | Volvo Cars & Trucks

    1 Answer

    2005 Chevrolet Tahoe Power Windows and Power Locks not working.


    The power windows an power locks are controlled by a module , DDM - driver door module . As far as the locks locking when you put the vehicle into reverse an unlocking when you put the vehicle into park , that's how there are suppose to work , automatic lock an unlock feature . When you put the vehicle into any gear from park the locks should lock . Did she hit window lockout function ?

    The power door lock system consists of the following components:
    • The driver door module (DDM)
    • The passenger door module (PDM)
    • The body control module (BCM)
    • The driver information center (DIC)
    • The rear door lock switch
    • The door lock relay
    • The door unlock relay
    • The liftgate lock relay--utility vehicles with liftgate only
    • The reversible door lock actuators in each of the doors and liftgate
    • LOCKS 20A fuse (rear lock/unlock relay supply voltage)
    • ECC 10A fuse (liftgate lock relay supply voltage .

    Programmable Automatic Door Locks
    The automatic door lock feature can be programmed to control the door lock system. The automatic door lock feature is factory programmed to have all doors lock and unlock. For detailed instructions on programming the automatic door locks, refer to Vehicle Personalization in Personalization.
    When the automatic door lock feature is programmed to control the door lock system, the driver door module (DDM), passenger door module (PDM) and body control module (BCM) will lock the vehicle doors if the following inputs are true:
    • Ignition 1 input is active.
    • All door jamb switch inputs are inactive.
    • Cargo door or liftgate/liftglass ajar inputs are inactive.
    • Transmission is shifted out of park.
    This automatic door lock function will only occur once per ignition cycle unless, a door jamb switch input changes state to active and back to inactive. Then the DDM, PDM and BCM will lock all doors again.
    Once the automatic door lock feature has locked the doors, the BCM will then unlock all the doors when the transmission is shifted into park.
    Driver, Passenger and Cargo Door Lock System Operation
    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.

    Mar 16, 2017 | 2005 Chevrolet Tahoe

    1 Answer

    I bought a 1996 Subaru Impreza L 4dr 5speed AWD that runs and starts fine but when I was installing fog lights i noticed that there appears to be an alarm hooked up (it says "code alarm elite DM...


    Battery Constant 12v+ Positive Wire (+): Black/Yellow
    Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness

    Starter Positive Wire (+): Blue/Red
    Starter Positive Wire Location: Ignition Switch Harness

    Ignition Positive Wire (+): Red
    Ignition Positive Wire Location: Ignition Switch Harness

    Accessory Positive Wire (+): Red/Yellow
    Accessory Positive Wire Location: Ignition Switch Harness

    Parking Light Positive Wire (+): Red
    Parking Light Positive Wire Location: Low In Drivers Kick Panel

    Power Door Lock Negative Wire (-): Add Actuator. This vehicle uses a central door locking system. When connecting a keyless entry, you will need to add a door lock actuator and some units will also require (2) extra relays.
    Power Door Lock Negative Wire Location: To Drivers Door Only

    Power Door Unlock Negative Wire (-): Add Actuator. This vehicle uses a central door locking system. When connecting a keyless entry, you will need to add a door lock actuator and some units will also require (2) extra relays.
    Power Door Unlock Negative Wire Location: To Drivers Door Only

    Door Trigger Negative Wire (-): Red/White
    Door Trigger Negative Wire Location: In Black Plug, Above Hood Release

    Domelight Supervision Wire: Use Door Trigger, Requires Relay
    Domelight Supervision Wire Location: N/A

    Horn Negative Wire (-): Red/Green
    Horn Negative Wire Location: At Steering Column Harness

    Tachometer Wire Negative Wire (-): Black/Blue
    Tachometer Wire Negative Wire Location: At ECM, Under Drivers Side Dash

    Brake Light Positive Wire (+): White/Black
    Brake Light Positive Wire Location: At Switch Above Brake Pedal

    CODE ALARM SYSTEM

    Used on:
    Impreza 1996-2001
    Legacy 1995-1999
    Forester 1998-2000

    codealarmremote2.jpgBattery GP-23A

    Lock: Left button will lock all doors. Double chirp indicates locked.
    Unlock: Right button will unlock driver's door only. Hold unlock button app 6 seconds, it will unlock all doors including rear gate. Single chirp indicated unlock.
    If the car chirps or lights flash 4x the alarm was triggered.
    Panic. Press both buttons to activate emergency honk and flashing lights.
    Valet mode: With optional alarm onlyPress the red alarm button on the left of the steering wheel. The light will quickly double flash. To re-set back to normal mode, press the red alarm light button again

    Battery failed and lights flashing?
    Parking lights will flash when the vehicle's battery is disconnected and reconnected.
    To stop lights from flashing, either:
    Press remote transmitter "UNLOCK" button once OR turn the ignition switch to the "ON" position and press programming button for one second (see below).
    The vehicle interior (courtesy) light and door open warning light (DOOR AJAR indicator) will then illuminate for 60 seconds when the ignition is turned off, or until the doors are locked with the remote transmitter. Yes, the dashboard instrument panel lights will flash when the parking lights flash.

    Programming or Overriding the Alarm when you have lost the remote
    Open driver's door.
    Turn ignition key to 'On'
    Press and *hold programming button* in (see diagram, button under dashboard)
    After 15 seconds the the door locks will cycle 3 times. Do not release Programming button.
    Press lock (left) button the remotes to be programmed. The door locks will cycle one time. Exit programming mode by releasing Programming button under dashboard and turning key to off.


    codealarmremote1.jpgCode Alarm Programming Button is under dashboard on the kick panel by the driver's left knee, left of the steering column. If you can't find it, it might still be tucked up in the wiring harness higher up in that same general area. The botton is recessed in a plastic ring (see diagram).
    This button must be pressed while programming remotes or if the battery was disconnected and the lights are flashing.

    Jan 05, 2011 | Subaru Impreza Cars & Trucks

    1 Answer

    Doors not locking (but unlocking is okay).


    The only time my doors don't lock with the remote is when a door is open. If your problem is mechanical it wouldn't unlock. Might be a sensor thinking a door is open. Does the other functions with the remote work like rolling the windows down or hitting the lock button flashes the light ? I can't lock my doors from the inside with the remote.

    Oct 20, 2009 | 2003 Honda Accord

    1 Answer

    Fob doesn't work on driver's door.


    if the passenger side works with the fob and the power button and not the diver it is def the driver door lock actuator.

    Aug 26, 2009 | 2003 Honda Civic

    1 Answer

    2006 Tahoe Z71 Lift Gate Will Not Unlock With Remote


    Take the liftgate inside panel off an check the wiring , connections etc....
    rear door hatch lock repair GMC Chevrolet
    chevy tahoe lift gate not opening
    The liftgate will lock any time the vehicle is shifted out of park on vehicles equipped with an automatic transmission and at vehicle speeds exceeding 5 kph with manual transmission. This happens in conjunction with auto door locks if enabled or independently of auto door locks if the feature is disabled. This ensures that the liftgate is locked anytime the vehicle is shifted out of park or when the vehicle is in motion.
    The liftgate lock relay supply and coil sides receive a constant voltage through the battery voltage supply circuit and the ECC fuse. The normally closed contact is connected to ground and the control side is connected to the body control module (BCM). A lock function will occur when a door lock switch activation, keyless entry lock transmission, auto door lock function or a liftgate lock function has been received by the BCM. The BCM will then ground the control side of the liftgate lock relay. This energizes the relay and allows voltage to be applied to the liftgate lock actuator lock control circuit. Since the other side of the liftgate lock actuator is connected to the normally closed contacts of the door unlock relay to ground, the liftgate will lock. When an unlock function occurs the BCM will ground the control side of the unlock relay and the rear doors and liftgate will unlock.
    The BCM also runs diagnostics on the liftgate lock relay control circuit and will set DTC B3825 as current and also send a Class 2 message to the DIC. The DIC will display REPLACE LIFTGATE FUSE to inform the driver that a fault has been detected in the liftgate lock circuit and that the liftgate is not locked. Faults that will set the DTC and cause the DIC to display the message could be any of the following

    Power Door Locks Inoperative - Endgate/Liftgate

    Schematic Reference: Door Lock/Indicator Schematics
    Connector End View Reference: Power Door Systems Connector End Views
    1
    Did you perform the Diagnostic System Check - Vehicle?
    YES - Go to Step 2
    NO - Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
    2
    Activate the door lock switches to the lock and unlock positions.
    Do both rear passenger doors lock and unlock?
    YES - Go to Step 3
    NO - Go to Power Door Locks Inoperative
    3
    Did the liftgate lock actuator lock and unlock?
    YES - Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
    NO - Go to Step 4
    4
    Disconnect liftgate door lock actuator.
    With a test lamp connected to a good ground, probe the door lock actuator lock circuit at the door lock actuator harness connector.
    Activate a door lock switch to lock position.
    Does the test lamp illuminate?
    YES - Go to Step 5
    NO - Go to Step 7
    5
    With a test lamp connected to a good ground, probe the door lock actuator unlock circuit at the door lock actuator harness connector.
    Activate a door lock switch to unlock position.
    Does the test lamp illuminate?
    YES - Go to Step 6
    NO - Go to Step 8
    6
    Inspect for poor connections at the harness connector of the door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
    Did you find and correct the condition?
    YES - Go to Step 10
    NO .. Go to Step 9
    7
    Repair the open door lock actuator lock circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
    Did you find and correct the condition?
    YES - Go to Step 10
    --
    8
    Repair the open in the door lock actuator unlock circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
    Did you find and correct the condition?
    Go to Step 10
    --
    9
    Replace the liftgate door lock actuator. Refer to Door Lock Actuator Replacement in Body Rear End.
    Did you complete the repair?
    Go to Step 10
    --
    10
    Operate the system in order to verify the repair.
    Did you correct the condition?
    System OK
    Go to Step 2

    Apr 27, 2017 | 2006 Chevrolet Tahoe

    2 Answers

    Security light on and jeep won't run after putting battery in


    it sounds like the transponder chip in your key needs reprograming "dose any lights on the dash come on or flash"

    Dec 24, 2008 | 1994 Jeep Grand Cherokee

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