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Hatch pull down switch alternative

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Old May 23, 2019 | 09:34 PM
  #1  
MarcusMandarino's Avatar
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From: Sao Paulo, Brazil
Car: 85 Camaro Berlinetta
Engine: 305
Transmission: 700R4
Hatch pull down switch alternative

Hi friends!

As you may know the switch that limits travel and determines the rise and fall of the rear hatch motor is no longer manufactured and is difficult to acquire. This is why I have developed a solution that I come here to share with other owners. It is an economical solution and it works very well. It only requires a switch you can find on ebay for a dollar and some ability to build an L-bracket and some soldering. I'm attaching photos. I will be happy to answer any questions!


the original

the switch 3PDT



the Original assy



the Alternative assy
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Old May 24, 2019 | 10:14 PM
  #2  
DynoDave43's Avatar
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Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: Hatch pull down switch alternative

Very clever. Nice work.
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Old May 25, 2019 | 12:39 AM
  #3  
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From: SW Missouri
Car: 1989 Trans Am
Engine: sp357
Transmission: TKX
Re: Hatch pull down switch alternative

Originally Posted by DynoDave43
Very clever. Nice work.
Agreed. Looks like a simple solution and one has to wonder why this was not the original design.
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Old May 25, 2019 | 08:51 AM
  #4  
ironwill's Avatar
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Car: 1986 IROC Z
Engine: 5.0 TPI
Transmission: 700R4
Axle/Gears: 3.23 Posi
Re: Hatch pull down switch alternative

Excellent solution to a problem that comes up frequently on this site.

The only thing I'd add is to source a high-quality switch rather than a cheap no-name item. Electronics components suppliers such as Digikey https://www.digikey.com/ sell switches that are tested to last for thousands of cycles without failure.
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Old May 25, 2019 | 04:34 PM
  #5  
MarcusMandarino's Avatar
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From: Sao Paulo, Brazil
Car: 85 Camaro Berlinetta
Engine: 305
Transmission: 700R4
Re: Hatch pull down switch alternative

Originally Posted by ironwill
Excellent solution to a problem that comes up frequently on this site.

The only thing I'd add is to source a high-quality switch rather than a cheap no-name item. Electronics components suppliers such as Digikey https://www.digikey.com/ sell switches that are tested to last for thousands of cycles without failure.
Agree. I'm using a C&K one that is knowed quality grade.
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Old May 25, 2019 | 04:58 PM
  #6  
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From: Pearland, Texas
Car: 1985 Firebird & 1992 Camaro B4C 1LE
Engine: 310 LS1. & 305
Transmission: TH350 & T5
Axle/Gears: 9" 3.73
Re: Hatch pull down switch alternative

Interesting. Since the assembly differed between the years, and the 92 unit is NLA, any idea how this solution would work on a 92? I have purposely NOT opened the hatch on our B4C since the last time I did, it took a couple of days to get it to pull back down.

I'd like to do the headliner in this car, but the hatch is the best way for it to come out and the new one to go back in. =8-0
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Old Mar 16, 2023 | 02:43 PM
  #7  
87Birdgang's Avatar
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From: Dayton Ohio
Car: 1987 trans am
Engine: carbed 305 for now
Transmission: 700R4
Re: Hatch pull down switch alternative

i know im years late on this post but could you show how you wired the switch up please? I don't have a problem with the motor coming up, only pulling down

Last edited by 87Birdgang; Mar 16, 2023 at 02:53 PM.
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Old Mar 17, 2023 | 10:54 AM
  #8  
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From: Cincinnati,Ohio
Car: 1991 BandittII Firebird
Engine: 5.7 HSR
Transmission: 700R4
Axle/Gears: 3.27 9 bolt
Re: Hatch pull down switch alternative

Originally Posted by 87Birdgang
i know im years late on this post but could you show how you wired the switch up please? I don't have a problem with the motor coming up, only pulling down
Welcome another Ohioian! We're about 40 minutes south of Dayton in Hamilton.
Have you identified that your T-switch/Reversing switch is bad? Depending on the condition It is possible to repair them.
hatch pulldown motor not working - Third Generation F-Body Message Boards
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Old Mar 18, 2023 | 11:03 AM
  #9  
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From: Dayton Ohio
Car: 1987 trans am
Engine: carbed 305 for now
Transmission: 700R4
Re: Hatch pull down switch alternative

Wow didn't even notice that lol, nice too meet another O-state native. Greater Cincinnati F-body Association im going have too check you guys out when the weather gets warmer. As far as making sure the T-switch/ Reversing switch being bad, I don't think its completely bad because when I open the hatch the motor will come up. But when i close it won't pull down until i drive around and hit a couple bumps then it will magically pulls down lol. i was thinking maybe the solder had some cracks in it causing it to loss connection.
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Old Mar 19, 2023 | 09:23 AM
  #10  
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From: MICHIGAN
Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: Hatch pull down switch alternative

Originally Posted by 87Birdgang
Wow didn't even notice that lol, nice too meet another O-state native. Greater Cincinnati F-body Association im going have too check you guys out when the weather gets warmer. As far as making sure the T-switch/ Reversing switch being bad, I don't think its completely bad because when I open the hatch the motor will come up. But when i close it won't pull down until i drive around and hit a couple bumps then it will magically pulls down lol. i was thinking maybe the solder had some cracks in it causing it to loss connection.
Will we see you at the Trans Am Nationals in Dayton this year?
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Old Apr 14, 2023 | 11:36 AM
  #11  
87Birdgang's Avatar
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From: Dayton Ohio
Car: 1987 trans am
Engine: carbed 305 for now
Transmission: 700R4
Re: Hatch pull down switch alternative

sorry I'm so late but yup yup I'll be there this year. trying to chase down a brake light issue now smh..I've changed the switch and bulbs so far with no luck.. Lol i hate electrical problems
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Old Sep 21, 2025 | 12:55 AM
  #12  
MTMiii's Avatar
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Car: 1987 Trans AM
Engine: 305 Carbureted
Re: Hatch pull down switch alternative

Originally Posted by 91banditt2
Welcome another Ohioian! We're about 40 minutes south of Dayton in Hamilton.
Have you identified that your T-switch/Reversing switch is bad? Depending on the condition It is possible to repair them.
hatch pulldown motor not working - Third Generation F-Body Message Boards
Maybe you'll see this maybe not but I was wonder the best way to test the reversing switch to see if it's working or not. I think I might have both an issue the reversing switch and the contact switch. Thanks for the reply if you do see!
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Old Sep 21, 2025 | 12:22 PM
  #13  
72buickgs's Avatar
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Joined: Oct 2021
Posts: 722
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From: Windsor, On
Car: 1984 Trans AM
Engine: 305
Transmission: 700-4r
Axle/Gears: 3.23
Re: Hatch pull down switch alternative

Great idea for those owners have this style of locking mechanism
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