Rear Hatch and Glass won't open - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

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  #1  
Old 06-03-2010, 12:23 PM
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rsutt rsutt is offline
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2004 GMC Envoy SLE
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Rear Hatch and Glass won't open

Help please.

My glass on the hatch won't open at all. Pushing thre button does nothing. It will not pop like it normally does. Is there anyway to open the glass without taking it to a dealer?
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  #2  
Old 06-03-2010, 05:12 PM
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jacob789456 jacob789456 is offline
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2002 Chevy TrailBlazer LTZ
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Are you sure the car is unlocked, just to eliminate that problem... It could be the Liftgate Control Module in the liftgate or it could also be a bad locking cylinder. In our TB you have to press the unlock button on the fob 3 times to get the rear window to unlock.
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  #3  
Old 06-03-2010, 05:29 PM
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It does unlock, it just does nothing pushing it in. It doesnt have any resistence to it, the button just goes in like nothings behind it.

I need the glass to open to remove the rear panel on the inside correct?
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  #4  
Old 06-03-2010, 05:42 PM
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rsutt rsutt is offline
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Hmmm alright. I only want the panel off because both the glass and hatch do not open . The hatch at least opens after unlocking a bunch of times.
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Old 06-04-2010, 12:29 PM
VTT5 VTT5 is offline
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Quote:
Originally Posted by rsutt View Post
It does unlock, it just does nothing pushing it in. It doesnt have any resistence to it, the button just goes in like nothings behind it.
The locking mechanism rotates the actuator that the button hits. If there's no resistance, then my first guess was that the lock is frozen, which you could try to solve by popping off the little cover in the rear panel and WD40'ing the locking mechanism, or maybe forcing it with a screwdriver. If the tailgate opens itself, then the lock is working (at the bottom at least), and the top portion may have bent or broken.

I think you'll have to unscrew the mounting plate for the handle on the window to allow you to open the glass and then pop off the panel to see what's going on.
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  #6  
Old 06-04-2010, 04:32 PM
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Tarnished Tarnished is offline
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Quote:
Originally Posted by rsutt View Post
Help please.

My glass on the hatch won't open at all. Pushing thre button does nothing. It will not pop like it normally does. Is there anyway to open the glass without taking it to a dealer?
Mine would do the same thing whenever I was on uneven terrain, or getting to an offroad site. I have no idea what used to make it do that, but it was always after being unlevel. I once opened all the doors, and then slammed them shut; then my liftgate worked.

I have no idea if I fixed it, or how. Hasn't done it since though.
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  #7  
Old 06-04-2010, 05:52 PM
Doc Brown Doc Brown is offline
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Mine did the same thing, except I could still open the lift gate. Take the inside plastic panel off the lift gate. It just snaps off, you don't need to open the window to do this. Then use your fob to lock and unlock the doors and watch the lock mechanism to see what its doing. The housing for the button on mine got very corroded over time. That prevented it from snapping back in place, which in turn prevented the window lock from going to the correct position when it was supposed to be unlocked. Its held on with a clip. I took it apart and cleaned it, and stretched out the spring a little bit. It works fine now. I'm not sure what would cause your lift gate not to open, but you may see something when you pop the cover off.
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  #8  
Old 06-04-2010, 06:37 PM
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I thought there was something right inside the glass that needed to be taken out before the inside panel could come off?
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  #9  
Old 06-05-2010, 01:34 PM
bigbbutzin bigbbutzin is offline
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Funnhy. I stumbled over his situation yestarday and now im having the same exact issue just today, although i can open my tailgate. Kinda makes me chuckle, but ill use the tips in the previous posts to see what went wrong
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  #10  
Old 06-06-2010, 11:38 AM
bigbbutzin bigbbutzin is offline
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WD-40 worked like a charm! Thanks everyone for your input!
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