Question about 2007 GMC Yukon Denali

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LIFTGATE OPENS NORMALLY BUT ONLY CLICKS WHEN TRYING TO CLOSE

AUTOMATIC LIFT GATE WILL OPEN FINE BUT WHEN I PUSH THE BUTTON ON THE BOTTOM OF THE GATE IT JUST MAKES A HUMMING NOISE FOR A SECOND AND DOESNT CLOSE

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  • 299 Answers

Sounds like bad spot in gear,will require replacing mechanism.

Posted on Jun 18, 2009

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3 Answers

2004 lincoln navigator lift gate open warning comes on with lift gate closed.


liftgate ajar switch , possibly . Without testing that would be just a guess . Do you know how to test automotive electrical circuit's ? Using a wiring diagram an a DVOM -digital volt ohm meter ? Looking at a factory service repair manual to find location of the ajar switch . Also checking for DTC- diagnostic trouble codes ,first !
B2703 Open/Close Switch Stuck Active Power Liftgate Module B2721 Gate Ajar Output Short to Ground or Open Power Liftgate Module REFER to Section 501-03 . B2722 Open/Close Switch Active During Self-Test Power Liftgate Module REFER to Section 501-03 .
B2718 Gate Ajar Output Short to Battery Power Liftgate Module REFER to Section 501-03 .
  • The interior lights remain on and the instrument cluster message center indicates liftgate ajar
  • Liftgate latch is not in primary position.
  • Manually PULL on the liftgate. If liftgate moves, OPEN and CLOSE the liftgate to the primary latch position. Manually PULL on liftgate glass. If liftgate glass moves, OPEN and CLOSE the liftgate glass. If the liftgate ajar condition still exists, Go To Pinpoint Test B .

PINPOINT TEST B: THE POWER LIFTGATE DOES NOT OPERATE/DOES NOT OPERATE CORRECTLY Test Step Result / Action to Take B1 RETRIEVE THE DTCs FROM POWER LIFTGATE MODULE
  • Use the recorded power liftgate module DTCs from the continuous and power liftgate module self-tests.
  • Are any power liftgate module DTCs recorded?
Yes
If DTC B2552 or B2698, GO to B54 .

If DTC B2699 or B2701, GO to B40 .

If DTC B2700 or B2702, GO to B41 .

If DTC B2703 or 2722, GO to B4 .

If DTC B2704, B2705 or B2706, GO to B31 .

If DTC B2709, B2710, B2711, B2712, B2819, or B2820, GO to B23 .

If DTC B2713, GO to B19 .

If DTC B2714, B2715, B2821 or B2822, GO to B15 .

If DTC B2718 or B2721, GO to B46 .

If DTC B2723, GO to B50 .

If DTC B2724 or B2725, GO to B10 .

If DTC B2726, GO to B35 .

If DTC B2825, GO to Symptom Chart and verify symptom the power liftgate reverses during power close operation (mid-travel). If sent here from the symptom chart, GO to B23 .

If the liftgate unexpectedly reverses direction when ambient temperatures are greater than 32°C (90°F), GO to B23 .

No
GO to B2 .

Feb 02, 2018 | Lincoln Cars & Trucks

1 Answer

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

Rear hatch keeps opens while driving...


Unless you have electrical diagnostic skills , I suggest you take this to the dealer ! The lift gate can be opened by operating the switch on the instrument panel. Battery voltage is supplied to the liftgate actuator through the body control module (BCM). The BCM will pulse the lift gate actuator when a release input is received through the key fob, or the instrument panel switch.
The body control module (BCM) receives an input from the liftgate ajar assembly. The ajar assembly is normally open when the liftgate is fully closed. When the liftgate is opened, the ajar assembly contacts close providing a path to ground. The driver information center (DIC) illuminates the rear access open message when the gate is open. The instrument panel cluster (IPC) receives a serial data message from the BCM indicating the liftgate ajar status. If this message is displayed and the vehicle speed is greater than 8 km/h (5 mph), a chime will sound.
It could be ajar switch is bad .

Dec 16, 2015 | 2012 Chevrolet Equinox LS 4dr SUV 2.4L...

2 Answers

Why liftgate acuator clicking when lift gate is open


I would bet on the liftgate module (LGM) It controls all that stuff back there,wiper,defrost,gate ajar light,gate lock and unlock ect. Might try wiggleing the wiring boot where the wires go from the body to the gate,if it changes anything,bet on a broken wire inside that boot.
If not the LGM is my first thought.

Feb 15, 2015 | 2004 GMC Envoy

1 Answer

I have a 2005 Navigator. Sometimes the liftgate works correctly. Other times it will close via remote, then immediately reopen. Sometimes, I must stop it manually, then push it closed by hand so I can...


Electronic's , aren't they great ? There is a control module (power lift gate module ) Switch (sensor) inputs to the module . Lift gate obstacle detection strip right and left , liftgate cinching motor ,liftgate unlatch motor .Liftgate drive motor assemblys left and right . Probably a bad switch feeding bad voltage signal to the control module ! Like one of the obstacle detection sensors maybe. Could possibly have DTC'S - diagnostic trouble codes stored in the control module. Your best bet maybe to have the dealer run diagnostic's on it , check for codes . Need a factory or professional type diagnostic tool to do this. I would say you mite be able to check the sensor inputs to the module , don't know what or how much voltage > Some of these circuit's are a five volt signal from the module . Ohm check the obstacle detection sensor ? I still think best thing would have it checked for DTC'S . Almost forgot about the thing opening when you close another door , All the modules on the vehicle are connected on what is call a serial data network . Doors have modules inside as well .could be commanding that door open some how.
If you would like to see what your up against , here is a web site for free wiring diagrams http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size. Under system click on body & accessories , then under subsystem click on power liftgate. Click the search button ,then the blue link. The second diagram down starts liftgate diagrams . Good luck !

Sep 06, 2017 | 2003 Lincoln Navigator

1 Answer

Power liftgate will not open with remote, instrument panel control or button in rear cargo on lincoln mkx


It can be faulty switch or its issue with lift gate latch.Its got stuck up hard or cracked inside.It has to be inspected.-----------
There are few help links with proper solutions for these problem.I suggest you to refer the links.
Click the link below:----
2007 Mercury Mountaineer: Liftgate will not Unlock or Open? http://whoisbyme.blogspot.in/2012/06/2007-mercury-mountaineer-liftgate-will.html
------------
Adjust Hydraulic Lifters? http://schematicsdiagram.blogspot.in/2012/04/adjust-hydraulic-lifters.html
-----------
How to open rear lift gate? http://repairhelpcenter.blogspot.com/2011/12/how-to-open-rear-lift-gate.html

--------- Power Liftgate Shuts Down http://whoisbyme.blogspot.in/2012/07/power-liftgate-shuts-down.html
------------ Power Lift Gate Will Not Remain Open http://whoisbyme.blogspot.in/2012/07/power-lift-gate-will-not-remain-open.html
----------- Power Lift-gate will not Operate http://whoisbyme.blogspot.in/2012/07/power-lift-gate-will-not-operate.html
------------- Liftgate will Not Stay Up Open? http://whoisbyme.blogspot.in/2012/07/liftgate-will-not-stay-up-open.html

---------------- Rear Door will not open http://whoisbyme.blogspot.in/2012/07/rear-door-will-not-open.html
------------ 2000 Toyota Corolla: Rear Door wont open from outside or inside? http://whatisbyme.blogspot.in/2012/05/2000-toyota-corolla-rear-door-wont-open.html

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

These details will help.
Thanks.

Nov 25, 2012 | 2007 Lincoln MKX AWD

1 Answer

The liftgate on 2004 Envoy does not stay in the open position & has to be held open manually; what can i do to fix this?


there are two hydraulic cylinders that normally hold the gate up. likely the gate was pushed open hard in cold weather, popping the seals in the cylinders. you will need to replace the cylinders. then, do not push the lift gate up to open it. it should be able to rise by itself. if it does not, you can gently ease it open slowly.

Nov 26, 2011 | 2004 GMC Envoy

2 Answers

I have a 2007 Suburban, and the lift gate opens up about 1/4 the way and then drops to the closed position. This happens regardless of how it's opened.


{: ) Your liftgate struts (shocks) could have gone weak. If it's a power liftgate, press the off button to disable the power liftgate function, so that you can open the liftgate manually. With a little help from you, extend the liftgate at full open position and check if it will hold itself up there as it normally should. If it starts to fall off as you catch it, that means the liftgate struts don't have enough pressure anymore to push and sustain the weight of the liftgate. Check for signs of leak on the struts, or better if you can replace it both.

Aug 02, 2011 | 2007 Chevrolet Suburban Three-Quarter-Ton...

3 Answers

The rear lift gate on my 2006 Lincoln Navigator will not open automatically or manually and there appears to be no way to access anything inside the door from inside or out.


POWER LIFT-GATE OPERATION - To open the optional power liftgate, push the button on the instrument panel , press on your five-button key fob (if equipped), or press and release the control located in the left rear quarter panel (Figure B). To unlatch the liftgate glass, push the button ) under the center of the license plate lamp shield, or press on your five-button key fob. Do not open the liftgate or the liftgate glass in a garage or other enclosed area with a low ceiling. Keep clear of the liftgate when operating the rear switch. To open the liftgate manually, pull the handle located on the liftgate to release the liftgate from the vehicle. The power system will take over when you release the handle. To close, make certain the rear window is closed, and then pull down the liftgate a few inches to activate power closing. Closing the gate rapidly or more than a few inches may activate the obstacle detection feature and stop the power system.------------ Also click this link for more help:--- http://technoanswers.blogspot.com/2011/05/power-liftgate-on-will-not-open-on.html ------------ This should help.Keep updated.Thanks.Helpmech.

May 19, 2011 | Lincoln Navigator Cars & Trucks

1 Answer

2005 Nissan Quest Automatic Liftgate won't open.


More than likely the lift gate motor has failed.

Mar 23, 2017 | 2006 Subaru Outback

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