The latch seems to be stuck, I push the lock/unlock button and dont even hear anything from the latch..I have opened it once but I had to be on the inside pushing with someone pulling from the outside..Now this does not even work..
We cut into the panel from the inside and pealed back the black mat on the inside and lifted up on the lift gate release bar! once we got it open we could adjust the clamp that dictates how much the hook is pulled back when u pull the handle. Ours slipped so it was doing the same thing as u said. It may not look pretty on the inside but the gate works and free of charge.
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The endgate/liftgate can be locked or unlocked by operating either one of the front door lock switches, your's doesn't do this ?
Endgate/Liftgate
Once the vehicle doors have been unlocked, the endgate/liftgate can be opened by using the handle mounted to the exterior of the gate. The endgate/liftgate can be locked or unlocked by operating either one of the front door lock switches, or by pressing the Lock/Unlock button on the key fob. The endgate/liftgate lock and unlock functions operate in conjunction with the rear doors.
There is a known TSB for this....
#07-08-52-003: Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE)/Key Fob Transmitter/Door Lock Switch, Lifgtate Hatch or Liftgate Glass May Lock/Unlock When Rear Liftgate Glass Button Depressed - (Sep 13, 2007)
Subject: Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE), Key Fob Transmitter or Door Lock Switch, And/Or Liftgate Hatch Or Liftgate Glass May Lock Then Unlock When Rear Liftgate Glass Button is Depressed (Reposition Lock Cylinder Wave Washer and Adjust Lock Rod)
Models: 2005-2007 Buick Rainier
2005-2008 Chevrolet TrailBlazer, TrailBlazer EXT, TrailBlazer SS
2005-2008 GMC Envoy, Envoy XL, Envoy Denali
2005-2008 Saab 9-7X
--------------------------------------------------------------------------------
Do This
Don't Do This
Reposition liftgate lock cylinder wave washer and adjust lock rod.
DO NOT replace the liftgate latch or actuator.
Condition
Some customers may comment on one or more of the following conditions:
• The rear liftgate glass may not lock when using the remote keyless entry (RKE), key fob transmitter or door lock switch unless the lock is pressed a second time.
• The rear liftgate or glass locks, but may be unlocked when the rear liftgate lock cylinder button is depressed.
• The rear liftgate locks but the liftgate glass may not lock.
Cause
These conditions may be caused by one or all of the following:
• The rear liftgate cylinder lock rod may be out of adjustment.
• The wave washer on the liftgate lock cylinder may be out of position with the cup side down.
• Excessive movement or slack in the lock rods at the liftgate bell crank assembly.
• The liftgate lock cylinder pawl may contact the rear liftgate glass latch when the lock cylinder button is depressed.
Correction
Important: Do Not remove the rear liftgate lock cylinder from the vehicle to perform this repair.
Reposition the rear liftgate lock cylinder wave washer and adjust the lock rod using the steps below.
Verify the customer's condition.
Open the liftgate.
Remove the upper liftgate garnish molding.
Remove the rear liftgate trim panel.
Remove the cylinder lock rod from the threaded lock rod retaining clip.
Tip
Place the tip of a screwdriver blade into the opening of the C-clip and slowly rotate the screwdriver to pry out the C-clip from the shaft. Then use needle-nose pliers to remove the C-clip.
Remove the C-clip from the rear liftgate lock cylinder push button and remove the wave washer.
Install the wave washer with the cup side up.
Position the wave washer with the curved edges of the wave spring parallel to the tabs on the lock cylinder shaft.
Important: Use needle-nose pliers to slightly squeeze the C-clip back into shape. Make sure the clip seated, you should feel a snap and hear an audible click.
Install the C-clip onto the shaft and in the slot using needle nose pliers. Then rotate the pawl several times to make sure the C-clip does not rotate. If the clip rotates then the clip is not fully seated.
Position the lock cylinder pawl to the full clockwise position.
Pull up on the cylinder lock rod to remove any slack in the bell crank.
Install the cylinder lock rod into the threaded lock rod retaining clip while removing any slack from the lock rod linkage.
Close the lock rod retainer clip.
Close the liftgate assembly.
Open the liftgate glass while keeping the liftgate closed.
Use the key fob to cycle the liftgate to the lock and unlock position while inspecting the rear liftgate pawl. The lock cylinder pawl should have clearance between the latch as shown above. If the pawl is contacting the latch, readjust the cylinder lock rod.
Verify that the customer's condition has been corrected.
I have a 2008 Suburban with the power liftgate disabled. I have had the power latch stop working, and the BCM report that the rear access open when it is closed (both gate and glass). Somehow the liftgate module thinks the gate is open, so I cannot open the gate at all, and the latch and rear wiper will not work. To reset the control module I pulled the liftgate fuse (#20) in the instrument panel fuse box, turned the car on, off, reinstalled fuse, turned car on, unlocked doors using drivers side switch, and the power latch will function again - at least for a while.
#07-08-52-003: Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE)/Key Fob Transmitter/Door Lock Switch, Lifgtate Hatch or Liftgate Glass May Lock/Unlock When Rear Liftgate Glass Button Depressed - (Sep 13, 2007)
Subject: Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE), Key Fob Transmitter or Door Lock Switch, And/Or Liftgate Hatch Or Liftgate Glass May Lock Then Unlock When Rear Liftgate Glass Button is Depressed (Reposition Lock Cylinder Wave Washer and Adjust Lock Rod)
Models: 2005-2007 Buick Rainier
2005-2008 Chevrolet TrailBlazer, TrailBlazer EXT, TrailBlazer SS
2005-2008 GMC Envoy, Envoy XL, Envoy Denali
2005-2008 Saab 9-7X
--------------------------------------------------------------------------------
Do This
Don't Do This
Reposition liftgate lock cylinder wave washer and adjust lock rod.
DO NOT replace the liftgate latch or actuator.
Condition
Some customers may comment on one or more of the following conditions:
• The rear liftgate glass may not lock when using the remote keyless entry (RKE), key fob transmitter or door lock switch unless the lock is pressed a second time.
• The rear liftgate or glass locks, but may be unlocked when the rear liftgate lock cylinder button is depressed.
• The rear liftgate locks but the liftgate glass may not lock.
Cause
These conditions may be caused by one or all of the following:
• The rear liftgate cylinder lock rod may be out of adjustment.
• The wave washer on the liftgate lock cylinder may be out of position with the cup side down.
• Excessive movement or slack in the lock rods at the liftgate bell crank assembly.
• The liftgate lock cylinder pawl may contact the rear liftgate glass latch when the lock cylinder button is depressed.
Correction
Important: Do Not remove the rear liftgate lock cylinder from the vehicle to perform this repair.
Reposition the rear liftgate lock cylinder wave washer and adjust the lock rod using the steps below.
Verify the customer's condition.
Open the liftgate.
Remove the upper liftgate garnish molding.
Remove the rear liftgate trim panel.
Remove the cylinder lock rod from the threaded lock rod retaining clip.
Tip
Place the tip of a screwdriver blade into the opening of the C-clip and slowly rotate the screwdriver to pry out the C-clip from the shaft. Then use needle-nose pliers to remove the C-clip.
Remove the C-clip from the rear liftgate lock cylinder push button and remove the wave washer.
Install the wave washer with the cup side up.
Position the wave washer with the curved edges of the wave spring parallel to the tabs on the lock cylinder shaft.
Important: Use needle-nose pliers to slightly squeeze the C-clip back into shape. Make sure the clip seated, you should feel a snap and hear an audible click.
Install the C-clip onto the shaft and in the slot using needle nose pliers. Then rotate the pawl several times to make sure the C-clip does not rotate. If the clip rotates then the clip is not fully seated.
Position the lock cylinder pawl to the full clockwise position.
Pull up on the cylinder lock rod to remove any slack in the bell crank.
Install the cylinder lock rod into the threaded lock rod retaining clip while removing any slack from the lock rod linkage.
Close the lock rod retainer clip.
Close the liftgate assembly.
Open the liftgate glass while keeping the liftgate closed.
Use the key fob to cycle the liftgate to the lock and unlock position while inspecting the rear liftgate pawl. The lock cylinder pawl should have clearance between the latch as shown above. If the pawl is contacting the latch, readjust the cylinder lock rod.
Verify that the customer's condition has been corrected.
To unlock the liftgate, press the unlock button on the Remote Keyless Entry (RKE) transmitter twice or use the power door lock switch. To lock the liftgate, press the lock button on the RKE transmitter or use the power door lock switch. The liftgate does not have a key lock cylinder. To open the liftgate, pull up on the handle located in the center of the liftgate. When closing the liftgate, use the molded handles to pull the liftgate down. Push the liftgate closed until it latches.
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.
Hi, viewers. The liftgate latch of 2008 Acadia is electrically controlled by switches, fuses, modules, and sensors. If for some reason the liftgate doesnt seem to open under the normal operating conditions, you can still open it mechanically if needed.
* First, go inside the vehicle and lower the 2nd and 3rd row seats, and then locate the round access plug (visible and similar to a rubber grommet) from the liftgate lower interior trim panel.
*Second, use a small flatbladed tool to remove that access plug and expose the hole.
*Third, look through the hole and push on a silver lever located on the right to unlock the liftgate.
*Fourth, when unlocked, push the liftgate outward or, you may need an assistant to pull open the liftgate from the outside handle while you push the unlock lever.
Once opened, you can now reflect back as to why your liftgate wont function. I hope you get lucky in your quest. Have a nice day! : )
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
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
Remove the liftgate trim panel.
Disconnect the liftgate ajar switch electrical connector.
Disconnect the liftgate latch actuating rod.
Open the clip.
Disconnect the actuating rod.
Remove and discard the liftgate latch bolts.
Remove the liftgate latch.
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.
Had same problem on Ford Escape, Could not unlock the rear liftgate or window, if you can open you are in better luck. If it is locked and closed, you will have to pull the top portion of the plastic trim away from the liftgate, it is held in place by metal retaining clips on top, and four screws on the bottom, if you can open, remove the screws then remove the rest of the panel, if unable, pull the top of the panel just far enough to reach in and unlock the liftgate. Once you have the gate open and the panel off, you will see the locking actuator connected to the electrical connetion, it is a little bit smaller then a pack of cigarettes with a black lever.
To remove you will need to remove the two outter 10mm nuts holding the "brass" colored assembly, you will probably have to disconnect the two lever connections to get to the back side of the brass assembly, once this is done, you can use a T-20 torx to remove the locking actuator, part number stamped on my part was 4510 5424 made by KIEKERT although a search of this part didnt give me any good results, anyway, that was the cause of my problem, once replace and all put back together everything worked fine.
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