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Trunk has one ungodly overbite!! Please help!

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Old Jun 30, 2021 | 04:01 PM
  #1  
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Car: 1987 Pontiac Trans Am Firebird
Engine: 5.0L V8
Transmission: Automatic
Trunk has one ungodly overbite!! Please help!

Hello once again third gen folks, this time I have a request of upmost importance. While working on my car's trunk pulldown motor ( and fixing it, it now works fine I think) I noticed the trunk being pushed out further and further until I woke up one morning and it was at such an extreme level that It wouldn't even go down far enough to even remotely touch the latch. I've done research but I've NEVER seen one get this bad, and it happened in a matter of days. It was nowhere near this bad a week ago. My brother and I have been trying to figure this out, and we've tried everything. We've removed the piston struts, loosened the bolts and tried to muscle the trunk inward (which was supposed to be the way it gets fixed usually) but no dice. There is little to no change every time we try. It just won't budge. We've made sure the trunk latch is in the correct position and everything, but not a thing is working, and we're starting to get fed up because working on that damn 200 pound trunk without the struts is one hell of a workout. Even looking at the gap at the top of the trunk near the bolts it looks almost fine, but it sure as hell isn't. So, please if you have any insight at all to as what might be wrong, or what I can replace, please share it in the comments. I can't drive this thing anywhere to get it fixed in it's current state because the damn trunk doesn't go down far enough to make contact with the third brake light, making it illegal to drive on the road. If you know what might be causing this or what I can replace to fix it, please tell me! Pictures are below, but If you need more, I will provide as I am able.

Cheers,

- Atomic

View from the side showing the overbite and the inability to close

one of our first thoughts was that the latch was being blocked by something and wasn't going down far enough because it was too far back. We muscled it inwards as far as we could, and now it's just resting on the actual hatch, and not moving down anymore.

front view of it not pushing down in the latch
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Old Jun 30, 2021 | 04:45 PM
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Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: Trunk has one ungodly overbite!! Please help!

How do the hinges look?
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Old Jun 30, 2021 | 04:52 PM
  #3  
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Car: 1987 Pontiac Trans Am Firebird
Engine: 5.0L V8
Transmission: Automatic
Re: Trunk has one ungodly overbite!! Please help!

There's nothing visibly wrong with them that I can immediately discern, but I'm gonna go take another look. I think the problem is that it just doesn't go into the trunk pulldown motor. We moved the motor down by manually pushing the button with our fingers then put the trunk down and it rested fine, but when the motor is up it just won't click in.
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Old Jun 30, 2021 | 04:58 PM
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Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: Trunk has one ungodly overbite!! Please help!

Again, what do your hinges look like?
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Old Jun 30, 2021 | 05:51 PM
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From: Northern NY
Car: 1988 Trans Am GTA and 1979 Trans Am
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: Borg Warner 9 bolt 3.27
Re: Trunk has one ungodly overbite!! Please help!

Have you tried adjusting the hatch motor? It can be moved around quite a bit. Is everything good and tight with the motor to body and the hinges etc? One last idea, are the hatch struts new?
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Old Jun 30, 2021 | 06:12 PM
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Car: '89 GTA, '15 Camaro LS 6sp.
Engine: L98, LFX.
Transmission: 4L60, AY6.
Axle/Gears: 3.27's.
Re: Trunk has one ungodly overbite!! Please help!

Hinge bolts loose.
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Old Jun 30, 2021 | 09:00 PM
  #7  
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Car: 1987 Pontiac Trans Am Firebird
Engine: 5.0L V8
Transmission: Automatic
Re: Trunk has one ungodly overbite!! Please help!

Hi all!!

I FIGURED IT OUT

The previous owner lost the key and it was in its permanent locked state so I had to bypass that manually and readjust the hatch and now everything's ship shape!

Thanks for the suggestions and help anyways!!!


- Atomic
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Old Jul 1, 2021 | 03:57 PM
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Car: 89' Firebird / 87' Formula
Engine: 3.4 / 5.0
Transmission: 700-R4
Axle/Gears: 3.42 / 3.42
Re: Trunk has one ungodly overbite!! Please help!

Originally Posted by AtomicKarate_16
Hi all!!

I FIGURED IT OUT

The previous owner lost the key and it was in its permanent locked state so I had to bypass that manually and readjust the hatch and now everything's ship shape!

Thanks for the suggestions and help anyways!!!


- Atomic

Wjay do you mean "permeant locked state"?

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Old Jul 2, 2021 | 02:52 PM
  #9  
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Car: 84 Z-28
Engine: 305 HO
Transmission: r-700
Axle/Gears: 3:73
Re: Trunk has one ungodly overbite!! Please help!

Prob. means in the down/closed position now.

My 93 Cadillac has the same deal as the Can/birds as they and others use the same unit.
A PO disabled mine in the down/locked position also.
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Old Jul 2, 2021 | 07:06 PM
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From: So. Cal
Car: '89 GTA, '15 Camaro LS 6sp.
Engine: L98, LFX.
Transmission: 4L60, AY6.
Axle/Gears: 3.27's.
Re: Trunk has one ungodly overbite!! Please help!

Originally Posted by 1989karr
Wjay do you mean "permeant locked state"?
He means the hatch lock actuator was stuck in the closed position not allowing the striker on the deck lid to close properly.
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Old Jul 3, 2021 | 12:40 PM
  #11  
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From: Syracuse NY
Car: 84 Z-28
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Axle/Gears: 3:73
Re: Trunk has one ungodly overbite!! Please help!

Yes.............I can open or close the lid to the correct closed position.
NO more issues.

Sure glad my 84 HO dont have it !
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