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Old 06-03-2008, 06:22 AM   #1
wongs83
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Default power liftgate won't go past 3/4 up


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On my 07 the other day when I went to use the power liftgate and it would only go up between 1/2 and 3/4 of the way and then it would come back down almost like it had came in contact with something. I did it about 15 times and tried to watch and listen to see what the problem could be. I don't know if this was the case before, I don't think so, but I noticed it almost looks as the the liftgate it shifted towards the passenger side. The reason I first noticed it was there is a little spot on the bumper by the tailight on the passenger side where the liftgate rubs when it comes back down. I also noticed now when the liftgate is closed it is right up against the passenger side tailight, but on the driver side I have almost a 1/4" gap.

Any thoughts here?
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Old 06-03-2008, 08:32 AM   #2
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My liftgate rubbed the bumper also, had it back to the dealer twice and the only thing they do is shift the bumper over. They say they have no way of adjusting the liftgate and how it works.

I imagine in your case, hopefully they can look at replacing the motor.

What happens if you manually lift the gate up all the way? is there any resistance where it stops? will it pull it all the way down when it is up?
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Old 06-03-2008, 08:44 AM   #3
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Is there a way to manually lift it?

The only way I was able to even get in it was after the liftgate raised 1/2 way and then started back down if I grabbed the gate and applied some pressure it would "pop". It seemed to take an awful lot of holding pressure to even stop the liftgate (more then what seemed safe and would probably break a bone on a kid before it stopped) and after this "pop" the lift gate could be raised and lowered manually but it was VERY heavy and seemed to have no assitance from the rods on each side. As a matter of fact it was hard for my wife to even hold up the liftgate while I drug baseball equipment out of the back. And when you would let the door go LOOK OUT because it would slam shut!

To be honest I"m starting to get a little disappointed in my tahoe. I've had it in the shop for radio problems, rattles in the top, rear defrost problems, defective rim problems and now the liftgate. Probably the most expensive vehicle I have purchased and by far the most problems.
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Old 06-03-2008, 11:19 AM   #4
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On the headliner right in front of the rearview mirror should be a switch where you can turn off the power liftgate. Do that and then go to the gate and open it up and see if you can lift it all the way up or if you experience any resistance before you get fully extended.
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Old 06-03-2008, 11:30 AM   #5
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If it is under warranty take it into the dealer, sounds like a bad motor. I surely wouldn't force it unnecessarily.
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Old 06-03-2008, 11:40 AM   #6
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Thanks for the responce. I actually went out and tried it and the liftgate iss really shifted over and rubs on the edge of the bumper as well as the edge of the tailight, but I don't think it has anything to do with the problem, but rather may a seperate problem that is caused by the liftgate not working.

I can lift the gate by hand and it doesn't seem to have any type of hangup anywhere, but it is heavy to raise. SHouldn't the assist shafts on each side be helping this go up when raising by hand. I have a pacifica that has a liftgate like this and it's not power, but when you open it and it gets about 1/2 way up the assist shafts on the side raise it and keep it up. On the tahoe I'm having to muscle it up and hold it up or it will come slamming down.
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Old 06-03-2008, 11:41 AM   #7
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Of course it's not under warranty, nothing happens when it's still under warranty. I'm at about 41,000 miles.
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Old 06-03-2008, 12:56 PM   #8
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It should not be difficult to open... The shock's may be bad? (maybe just one of them)... That may explain why it only goes up to a certain point.

I dont believe they are very expensive to replace.
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Old 06-03-2008, 01:03 PM   #9
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It could very well be the problem. I went out and looked at them again and the driver side shock looks as though it has been leaking down the side of the opening where it is mounted on the bottom.

Anyone changed these before that can share a trick or two? Otherwise they look pretty self explanitory.
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Old 06-03-2008, 01:29 PM   #10
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I am curious if this will also resolve your issue with the gate hitting the bumper/tail light.

Please report back.....
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