Question about 2007 Chevrolet Tahoe

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Liftgate door ajar warning light

Need to determine which of the following 3 components are the cause of the liftgate door ajar warning light to be on. Liftgate door ajar switch, door hinge pins, or the BCM. Then instructions to repair replace malfunctioning component

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  • 128 Answers

Have someone stand at liftgate and press the switch in. If the warning goes off, then your switch just needs adjusting or the small flat block that acts like your partners finger is missing or misaligned. The door hinge pins should not be a problem unless there is damage to the area or a teenager was using the door as a tarzan swing. The BCM is a possibility (rare), but it is much more likely a contact problem behind the switch - ie. a loose connection, chaffed wire or short. Good luck.

Posted on Apr 21, 2014

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Posted on Jan 02, 2017

polarcycle
  • 1392 Answers

SOURCE: have a 2002 chevy suburban, liftgate window will not open

Sounds like you have a wiring problem to your liftgate. Check the wires where they come out of the body, and go into the liftgate. If they are good, check fuses, or possibly a module.

Posted on May 25, 2009

  • 272 Answers

SOURCE: My Liftgate wont stay open

Buy them here or your local autozone or napa real easy install.

http://www.am-autoparts.com/AM/Hood-Hatch-Lift-Supports/Chevrolet/S10Blazer/-/AM-19070848/?utm_source=google_base&utm_medium=cpc&utm_campaign=new_google_base_feed

Posted on May 12, 2009

  • 113 Answers

SOURCE: 2007 Chevy Tahoe Liftgate starts to open, then reverses

needs new lift gate struts

Posted on Sep 05, 2009

  • 62 Answers

SOURCE: Neither the liftgate or liftgate window will open.

Common problem with these. Go to this website for help. http://www.chefseattle.com/blog/site-news/suburban-rear-liftgate-wont-unlock-how-to-fix/

Posted on Jun 19, 2010

  • 51 Answers

SOURCE: 94 silverado upper door hinge

replace a pin and roller

Posted on Oct 31, 2010

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2007 escalade 2 front doors wont trigger dome light but rear 2 doors do? Also killing battery on vehicle, I suspect maybe radio stays on due to vehicle not knowing driver left vehicle.


Door ajar switches maybe bad . Take the door panel off ,find a wiring diagram an test the circuit . Or you could check at the BCM ,would still need wiring diagram so you know what wire is what . Do you know how to test electrical circuits using a DVOM - digital volt ohm meter ? Could also take it to a qualified repair shop an have the BCM checked for DTC'S - diagnostic trouble codes .
The BCM, the door switches, and the liftgate module (LGM) (if equipped with power liftgate) communicate through the GMLAN serial data circuit for the lamp illumination commands of the doors, liftgate, and liftglass open/ajar switch signals. The LGM receives a ground signal from the pawl switch, ratchet switch, and liftglass ajar switch that are located within the liftgate latch and liftglass latch. For all vehicles, the left and right rear door latch switches are both on one circuit that is also an input to the BCM.
If the vehicle has a manual liftgate, there is an input circuit from the liftgate latch switch and liftglass latch switch directly to the BCM.
The left and right front door courtesy lamps receive voltage and ground from the driver door switch and the passenger door switch respectively. The remaining courtesy lamps are controlled and receive voltage through the BCM from the CTSY fuse in the instrument panel fuse block.

DTC B2555 01: Passenger Compartment Lamp Control Circuit Short to Battery
DTC B2555 02: Passenger Compartment Lamp Control Circuit Short to Ground

Aug 07, 2017 | Cars & Trucks

1 Answer

My rear lift gate on 07 tahoe opens and closes its self weather the key is in the ignition or not, opens 1/2 way closes 3/4 then all the way up and all the way down, sometimes it sets off the car alarm- it...


Operation
A power open or close cycle can only be initiated from the fully closed or open positions while the vehicle is in park and the liftglass ajar switch input to the liftgate module is inactive. At any time during a power open or close cycle the operation can be reversed by pressing any of the open/close switches. The power liftgate can be switched to manual mode with the on/off switch in the overhead console and during manual operation the power latch will still operate. During power liftgate operation the liftgate module continuously monitors the liftgate position and load profile. The position is calculated from hall effect sensor counts and the electrical load of the gear motor is used to determine physical resistance to the liftgate. Both of these profiles must be learned before the liftgate can operate properly and relearned any time most liftgate components are serviced.


Object Obstruction Detection
The liftgate control module continuously monitors power liftgate operation and calculates its location and direction of travel using 2 hall effect sensors that are part of the gear motor assembly. The hall effect sensors are 3 wire sensors and are supplied with a 5 volt power circuit, ground and signal circuits from the liftgate control module. The hall effect sensor signal circuits are referenced from battery voltage within the liftgate control module and pulsed low by the hall effect sensors.
The power liftgate system uses a secondary object detection method which consists of object sensors fixed to both sides of the liftgate near the seal area. The object sensors consist of an internal fixed resistor and normally open switch contacts which when closed will bypass the resistor. The signal circuit is supplied 5 volts through a resistor and monitored within the liftgate control module, and during normal power liftgate operation the signal circuit should remain a fixed value. When an object presses one of the sensors the contacts close and the resistor is bypassed causing the signal circuit voltage at the module to go low.

Gear Motor Assembly
The liftgate motor is a bi-directional motor and open or close operation is the result of the direction of the motor rotation. The liftgate module controls the liftgate motor through the control circuits by suppling power and ground in the appropriate polarity. The motor control circuits are monitored by the liftgate module prior to activation for a high or low condition and during motor operation for any irregular current flow conditions.
The liftgate motor clutch engages or disengages the liftgate motor to the liftgate drive gear and is the component that determines power or manual operation. When the liftgate module supplies power to the clutch control circuit the clutch coil is energized and the liftgate motor is engaged to the liftgate drive gear so that power operation can occur. The liftgate module monitors the clutch control circuit at all times for a short high while in an inactive state or a short low or insufficient current flow while in an active state.
The full open switch is part of the gear motor assembly and will close and become active when the liftgate reaches the full open position. The full open switch signal circuit is supplied battery voltage through a resistor and monitored within the liftgate module. The liftgate provides a low reference circuit and when the switch contacts close the signal circuit goes low and the liftgate module determines the switch to be active.

DTC B153A 00: Liftgate Latch Switch Signal Circuit
DTC B153A 08: Liftgate Latch Switch Signal Circuit Signal Invalid

When calibrating the liftgate position, the liftgate module (LGM) is placed in a functional state to learn the liftgate travel limits. DTC B1019 00 will set automatically as an indicator that the system is in learn mode and not as a fault indicator. Once the travel limits are learned by the liftgate module, the LGM will exit calibration mode. If the LGM does not exit learn mode, DTC B1019 00 will remain current and indicate a fault.
DTC B153B 02: Liftgate Open Switch Signal Circuit Short to Ground
DTC B153B 05: Liftgate Open Switch Signal Circuit Short to Short to Battery or Open
DTC B153E 02: Liftgate Position Sensor Signal Circuit Short to Ground
DTC B153E 05: Liftgate Position Sensor Signal Circuit Short to Battery or Open
DTC B153E 08: Liftgate Position Sensor Signal Circuit Signal Invalid

Your best bet , take it to the dealer .

Aug 08, 2017 | Chevrolet Tahoe Cars & Trucks

1 Answer

My liftgate ajar warning light comes on after car is started. however liftgate is latched. any ideas?


try rolling down a window or leaving a door open, shut liftgate hard. see if it still shows liftgate ajar. on my explorer the seals in door and windows shut so tightly that it was almost impossible to get the gate closed completely with doors closed and windows up.

if this doesn't help then you might need a new switch on it.

Feb 05, 2010 | 2003 Lincoln Navigator

2 Answers

Rear tail gate will not open


how to i open a stuck lift garte on a ford winstar 2000 lock broken too

Jun 14, 2009 | 2001 Ford Escape

1 Answer

2001 Ford Escape Rear Hatch won't unlock


The liftgate consists of the following components:
  • liftgate door lock actuator
  • liftgate lock cylinder (if equipped)
  • liftgate window glass
  • liftgate window latch/ajar switch
  • liftgate window glass release handle
  • liftgate latch remote control which consists of the following component:
    • liftgate release handle
  • liftgate latch, which consist of the following component:
    • liftgate latch door ajar switch
Liftgate Latch Actuator Removal and Installation
  1. Remove the liftgate latch remote control. For additional information, refer to Liftgate Latch Remote Control in this section.
SECTION 501-14: Handles, Locks, Latches and Entry Systems 2001 Escape Workshop Manual
REMOVAL AND INSTALLATION Liftgate Latch Removal and Installation
  1. Remove the liftgate trim panel.
  1. Disconnect the liftgate ajar switch electrical connector.
  1. Disconnect the liftgate latch actuating rod.
    1. Open the clip.
    1. Disconnect the actuating rod.
  1. Remove and discard the liftgate latch bolts.
  1. Remove the liftgate latch.
  1. NOTE: Make sure the liftgate latch release rod is not preloading the latch. It should be clipped in a relaxed state with no slack.
    NOTE: Position the liftgate latch release rod by pushing outboard to remove the slack.
  1. Remove the screws and the liftgate latch actuator
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May 29, 2009 | 2001 Ford Escape

2 Answers

2003 where is the modules for the liftgate in a 2003 lincoln Nav


tascafordparts.com for discount.

The liftgate actuator and remote control are in the liftgate.
The module is in the left rear quarter trim panel.


SECTION 501-03: Body Closures 2003 Expedition/Navigator Workshop Manual
REMOVAL AND INSTALLATION Power Liftgate Module Removal and Installation
NOTE: Prior to removal of the power liftgate module, it is necessary to upload module configuration information to a diagnostic tool. This information needs to be downloaded into the new power liftgate module once installed. For additional information, refer to Section 418-01 .
  1. Remove the rear quarter trim panel. For additional information, refer to Section 501-05 .
  1. Remove the power liftgate module.
    1. Disconnect the electrical connectors.
    1. Remove the bolts.
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  1. NOTE: Once the new power liftgate module is installed, it is necessary to download the module configuration information from the diagnostic tool into the new power liftgate module. For additional information, refer to Section 418-01 .

-----------------------------------------------------------------------------------------

Principles of Operation
The power liftgate is controlled by the power liftgate module.
The power liftgate module receives inputs from:
  • glass position switch (determines the ajar status of the liftgate glass).
  • forkbolt switch (determines the primary position of the latch).
  • detent switch (determines the secondary position of the latch).
  • home switch (determines the power cinch status).
  • power liftgate control switch (activates the power liftgate from the interior of vehicle).
  • pinch strip switches (determines if an obstacle is detected between the pinch strip and liftgate).
  • instrument cluster module (activates and sets the options for the power liftgate).
  • optical sensor (determines the direction, travel speed and obstacle detection of the liftgate).
  • UBP serial communication link.
The power liftgate module sends outputs to:
  • liftgate motors.
  • power cinching latch system.
  • liftgate chime module.
  • body security module
------------------------------------------------------------------------------------

The liftgate consists of the following components:
  • liftgate window glass latch
  • door lock actuator (power liftgate only)
  • liftgate latch
  • liftgate handle
  • liftgate latch remote control (power liftgate only)
  • liftgate ajar switch
  • chime module (power liftgate only)
  • -------------------------------------------------

Apr 14, 2009 | 2003 Lincoln Navigator

1 Answer

My passenger's door open indicator is on but the door is closed. Where is the indicator located? 2005 freestar. Thanks


Normal Operation When any door or the liftgate is opened, the ajar switch provides a ground signal to the smart junction box (SJB). When the door or liftgate is closed, the ajar switch opens, removing the ground signal. The SJB uses the multiple inputs from the ajar switches to determine whether the doors or the liftgate are in the open or closed position. The SJB then provides a message to the instrument cluster over the communication network. The message center uses this information to display the door/liftgate ajar message.

I suspect your door switch is not closing all the way.

Mar 28, 2009 | 2005 Ford Freestar

1 Answer

Key on engine running trouble code 55


Warning Chime Systems The generic electronic module (GEM) will sound the following warnings:
  • key-in-ignition warning
  • safety belt warning
  • headlamp switch ON warning
  • door ajar warning
------------------------------------------------------------------------------------------------
Headlamp Switch On Warning The generic electronic module (GEM) sounds when the driver door is opened while the headlamp switch (11654) is in the PARK or HEAD position, and continues to sound at a rate of 4 chimes per second until the headlamp switch is turned off or the driver door is closed.
  • When the headlamp switch is in the PARK or HEAD position, power is supplied through Circuit 293 (O/R) to the GEM.
  • When the driver door is open, the driver door open warning lamp switch (10B997)is closed and ground is supplied to the generic electronic module (GEM).
A delayed headlamps on repetitive chime will sound for a period of three seconds beginning twenty seconds after the key is turned to OFF, LOCK or ACC, the headlamp switch is in the PARK or HEAD position, and the driver door is closed. Delayed headlamps on is terminated by opening and closing the driver door again.
---------------------------------------------------------------------------------------
Door/Liftgate Ajar Warning The door/liftgate ajar warning functions as follows:
  • The generic electronic module (GEM) sounds a warning tone for one second when any vehicle door, liftgate window or the liftgate is ajar without any other door already open and the ignition switch is in the RUN position.
  • Power is then supplied through Circuit 627 (BK/O) to the door ajar warning indicator lamp which remains illuminated until all doors are closed or the ignition switch is no longer in the RUN position.
----------------------------------------------------------------------------------------------
Key-in-Ignition Warning The generic electronic module (GEM) sounds when the LH front door is opened with the key in the ignition switch and continues to sound until the key is removed or the door is closed.
  • When the key is in the ignition switch, the ignition key warning switch terminal and wire (11A128) is closed and ground is supplied through Circuit 158 (BK/PK) to the generic electronic module (GEM).
  • When the LH front door is open, the LH front door open warning lamp switch (10B997) closes and ground is supplied through Circuit 57 (BK) to the generic electronic module (GEM).
-------------------------------------------------------------------------------------
Safety Belt Warning When the ignition switch is turned to RUN or START from the OFF or ACC position and remains in RUN or START, the chime will sound for six seconds or until the safety belt is buckled. The safety belt warning indicator lamp (10C859) will turn on for 60 seconds, or until the LH front safety belt is fastened. Both the chime and lamp activate at the same time. If the safety belt is buckled when the ignition key is turned to RUN or START from OFF or ACC, the lamp will prove out for two seconds, but chime will not be activated. Any time the key is changed to RUN from START while the safety belt warning indicator is activated, the safety belt warning indicator will remain activated until either the timing sequence has been executed, or the safety belt is buckled.

Feb 25, 2009 | 1999 Ford Taurus

1 Answer

Interior lights will not turn off


get in vehicle and make sure all doors are closed and liftgate and liftgate glass are closed turn on ignition and see if warning of door ajar is on .if so then one of the door ajar switchs are stuck. purchase a can of PB BLASTER available at your local auto parts store and lube all latch assembleys on vehicle then open and close all doors 10 to 15 times this will usually free up the stuck switch. note spray the latch assembleys really good so it will reach the switch which is hidden in the latch.

Jan 09, 2009 | 2004 Ford Explorer

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