Question about 2006 GMC Yukon Xl Denali

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Rear liftgate power lock problem

My wife has a 2006 Yukon XL 1500 4x4 with power door locks. The locking mechanism for the rear lift gate (both the glass window and the actual gate) stopped working. The power door locks everywhere else still work with both the key fob and the door switches. Is there a fuse specific to the rear hatch or is it likely that the power lock motor in the hatch is faulty? I have pulled the trim on the interior of the liftgate. All cables are attached and the mechanism doesn't appear jammed in any way. It seems like either power isn't getting to the mechanism or the mechanism doesn't work anymore.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 422 Answers

SOURCE: power lift gate stuck in open position

try reseting it by undoing the battery cable

Posted on Aug 26, 2008

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emissionwiz
  • 76846 Answers

SOURCE: Liftgate

Fuse # 105- 40Amp Power liftgate module, Power
liftgate motors, Power running
boards control

Here is a link to your factory owners manual in PDF file format:

http://www.motorcraftservice.com/pubs/content/~WO3NAV/~MUS~LEN/41/03navog3e.pdf

Posted on Oct 21, 2008

jschoon77
  • 55 Answers

SOURCE: The rear power lift gate

You most likely have a failed switch in the rear gate jamb. This switch tells the system that the gate is closed and if the system thinks that the door is already open, it will not open it again.

Have the Body Control Module (BCM) scanned for codes and live data with a scan tool capable of accessing this information. This will tell you if the switch is operational by manually operating switch while monitoring the switch state with the scan tool.

Any shop with a decent scan tool should be able to do this. Nissan dealerships use Consult-II and now Consult-III scanners and have access to stuff the aftermarket guys don't get, but this should be accessible by nearly any higher end scanner like a Snap On Ethos, Solus, or Modis.

Hope this is helpful!


Nissan Scope Technician- 10+ years experience in Nissan dealership.

Posted on Nov 17, 2008

  • 10 Answers

SOURCE: 2007 yukon power liftgate won't

check the fuse

Posted on Nov 19, 2008

  • 1 Answer

SOURCE: Yukon xl rear door won't unlock and there is no manual lock.

I fixed mine by using fine steel wool to clean the brass contacts located at the right upper door frame on the right door as viewed from the rear of the vechicle.

Posted on Mar 21, 2009

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1 Answer

What fuse is it for rear hatch actuator 99envoy


One fuse powers all door lock actuators . The other door locks work ? if so it's not a fues problem .
The following locking functions are included on the vehicle:
• All the doors unlock -- All the doors will unlock, including the endgate/liftgate, when any power door unlock switch is detected. The passenger doors lock directly by pressing the lock switches. The driver door unlocks by the BCM using a driver door unlock relay.
• All the doors lock -- All the doors will lock, including the endgate/liftgate, when any power door lock switch is activated. All the lock actuators will activate directly from the power door lock switch (external to the BCM).
• The end/lift gate lock switch -- All the doors will lock or unlock from the end/lift gate lock switch

You probably have a bad lock actuator

Jun 14, 2017 | 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

LIFTGATE MOTOR WENT OUT. HOW CAN I OPEN THE DOOR MANUALLY?


chevy tahoe lift gate not opening - YouTube

? 2:12
www.youtube.com/watch?v=xU6ybiY3F4I
Sep 1, 2010 - Uploaded by 76bluemoon Back lift gate/glass would not open or release. ... Wow, are you sure? .... known issue with tahoe, suburbans, hummers and othergmc vehicles. ... 2007-2012 Yukon Denali Rear Door Lock Actuator Replacement ... 2004 GMC Yukon XL rear liftgateremoval - Duration: 50:17. by Velvethamma 5,814 views.

Aug 08, 2015 | 2007 GMC Yukon XL Denali

1 Answer

How to replace 2003 tauras stationwagon liftgate


a ratchet set a T O R X socket set and some one to help hold it or maybe you mean what is the procedure to take it off the car and put one back on? you must have some one with you it can be done by one person but it's better to have some help open the lift gate to the full or almost full open position pop off the lift gate arms that hold it up / unplug the wiring for the defroster and any other components like power lock release then go to the door hinges and unbolt them do the reverse of removal except if you still want the same key take off the lift gate inside panel and remove the clip that holds the lock cylinder in place and detach the lock rod for the release to actual lock mechanism that locks the door to the frame put the new lock cylinder(your original one back in then reverse removal and bolt the door back in connect the electrical plugs and the lift gate strut arms on each side before you lock the door make sure the lock is in correctly that you here and see it open the lock mechanism that attaches to the frame then it's safe to close the door but if this happens and you can't get the door open you have to climb in the back and work from inside the car it's a pain that's why check the door locks operation first before you close the door

Feb 06, 2015 | 2003 Ford Taurus

1 Answer

2008 suburban Stuck Lift Gate Lock


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.

Jun 05, 2013 | 2008 Chevrolet Suburban

1 Answer

Liftgate on 2005 uplander won't open


The locking mechanism on the rear lift gate for the Chevy Uplander has some plastic and rubber-coated parts that can get jammed. If you can pull back the panel from the inside top near the glass, you can reach down and try to spray some silicone lubricant into the lock. This could help get those parts unstuck so they spring back when you pull on the handle latch from the outside. Once you get the rear hatch open, I recommend taking out the locking mechanism and thoroughly lubricating it. Your rear lift gate will start to release very easily from then on.

Apr 08, 2012 | 2005 Chevrolet Uplander

1 Answer

I have a 2006 GMC Envoy Denali. The power locks on both the rear passenger side wont unlock automatically. i have to manually unlock it. although the automatic lock option works. All the other doors work...


both the rear passenger side wont unlock ???? How many doors are on the passenger side ? Or both back doors don't unlock ? Two relays lock / unlock the back door's Not the lift gate . The BCM controls the relay's . The relay's are located in the rear fuse box . Under back seat .

Oct 24, 2017 | 2006 GMC Envoy Xl

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

Yukon xl rear door won't unlock and there is no manual lock.


I fixed mine by using fine steel wool to clean the brass contacts located at the right upper door frame on the right door as viewed from the rear of the vechicle.

Mar 12, 2009 | 2003 GMC Yukon XL

1 Answer

Cannot lock liftgate


There is an electric motor inside the lift gate that has failed, it pulls the lock rod down to lock the gate when you press the remote, pull the lift gate trim panel and replace thiws part.

Oct 07, 2008 | 2006 Cadillac Escalade

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