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Rear hatch motor will not stop trying to pull down

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Old 05-29-2014, 05:02 PM
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Car: 1987 IROC-Z T-Tops
Engine: 350
Transmission: 700r4
Rear hatch motor will not stop trying to pull down

First time posting but long time reader of the threads and has been extremely helpful anyway, in my 87 iroc I went to close the rear hatch and it pulled down just fine and wouldn't stop trying to pull it down so i grabbed my keys quick and unlocked the latch (doesn't work from switch in interior) and the motor stopped trying to pull down. When I press the little black switch that tells the hatch to operate, it will just keep on running and I can't get the motor to go back up. I don't know if there is a sensor in there that senses when it is all the way down that could have went or something stripped in the motor. I saw something about a plastic screw that strips but i don't think thats the case... Help would be very much appreciated!!!

Last edited by IROC-Z Forever; 05-29-2014 at 05:10 PM.
Old 05-29-2014, 05:13 PM
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Car: 1989 IROC LSX
Engine: 5.7 TPI - LS1 Forged by LME
Transmission: 700r4 - 4L60E
Axle/Gears: 3.23 - 3.73
Re: Rear hatch motor will not stop trying to pull down

Mine did this and it was the plastic gear housing had broken.
Old 05-29-2014, 05:27 PM
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Car: 1987 IROC-Z T-Tops
Engine: 350
Transmission: 700r4
Re: Rear hatch motor will not stop trying to pull down

How easy is it to tell if its broken? I can't look at it right now but can when i get home, and how much would a replacement be if they even make them?
Old 05-30-2014, 09:48 AM
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Car: 1989 IROC LSX
Engine: 5.7 TPI - LS1 Forged by LME
Transmission: 700r4 - 4L60E
Axle/Gears: 3.23 - 3.73
Re: Rear hatch motor will not stop trying to pull down

Remove the rear panel and its all right there. Here is one solution.

http://www.top-downsolutions.com/hat...own-repair-kit
Old 05-30-2014, 09:54 AM
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Car: 1990 IROC-Z/1980 Firebird
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.27
Re: Rear hatch motor will not stop trying to pull down

You might as well rebuild that whole thing while it's out. It's around ~$140 shipped for the rebuild kit which includes the motor (I think the link posted above is it) and everything else you need. A rebuilt one or to have yours rebuilt will run you easily into the 250-350 range. Simple tools and a simple job. Hopefully you disconnected power to the motor to prevent it from burning up or killing your battery...
Old 06-01-2014, 10:43 PM
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Car: 90 RS 'Vert, 88 IROC-Z, 88 Firebird
Engine: 305 ci tbi, 305 ci tpi, 350 ci tpi
Transmission: WC-T5, WC-T5, 700R4
Axle/Gears: 3.45, 3.27, 3.27
Re: Rear hatch motor will not stop trying to pull down

From the description the problem could be as simple and inexpensive as the gear nut broke. It is available on my web site. Follow the repair instructions I posted over a decade ago here on TGO:

https://www.thirdgen.org/tech/hatchpulldown.pdf

Lon Salgren
Old 06-08-2014, 08:12 PM
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Re: Rear hatch motor will not stop trying to pull down

Here is what a friend did on his Camaro. Hope it helps.

http://www.top-downsolutions.com/hat...-Pull-Down-Kit
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