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Car Forum / GMC Cars / March 2005

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Trunk lock seized

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Chachi - 25 Mar 2005 21:16 GMT
I have an 88 z24 and I found out today that my trunk lock will not turn.
I have tried penetrating oil, wd40, and white lithium grease, but the
key will not turn. I can't get into the trunk to release it from the
inside. How should I go about this? Would coring it with a drill then
turning it with a tap work (that worked with old house locks)? I want to
avoid damaging the trunk as it's a new trunklid (the lock is less than a
year old in fact).

Thanks for any advice.
Steve Mackie - 25 Mar 2005 21:45 GMT
You CAN get into the trunk from the inside, just remove the backseat, it's
easy, four bolts and you're through. My '88 Z24 had a remote trunk release
in the glove box, doesn't yours?

Steve

> I have an 88 z24 and I found out today that my trunk lock will not turn.
> I have tried penetrating oil, wd40, and white lithium grease, but the
[quoted text clipped - 5 lines]
>
> Thanks for any advice.
Chachi - 25 Mar 2005 22:42 GMT
> You CAN get into the trunk from the inside, just remove the backseat, it's
> easy, four bolts and you're through. My '88 Z24 had a remote trunk release
> in the glove box, doesn't yours?

Yes it does, but the actuator is toast... Yet another thing I have to
replace...
Well, I'll try removing the backseat, but I could have sworn that the
backrest was bolted from the trunk side. I'll see when I get there...
Steve Mackie - 25 Mar 2005 23:25 GMT
> > You CAN get into the trunk from the inside, just remove the backseat, it's
> > easy, four bolts and you're through. My '88 Z24 had a remote trunk release
[quoted text clipped - 4 lines]
> Well, I'll try removing the backseat, but I could have sworn that the
> backrest was bolted from the trunk side. I'll see when I get there...

Nope, as noname said, two bolts under the front of the bottom seat cushion
to remove, then you'll see two bolts holding the seatbelts and the back part
of the seat in, remove, lift up, pull out.
Chachi - 25 Mar 2005 23:57 GMT
>>>You CAN get into the trunk from the inside, just remove the backseat,
>
[quoted text clipped - 14 lines]
> to remove, then you'll see two bolts holding the seatbelts and the back part
> of the seat in, remove, lift up, pull out.

Well this should be fun.... I have 2 amps bolted to the steel on the
backrest... What a mess just to get my trunk open to fix it.... Needless
to say i *will* be replacing the actuactor in case this happens again! lol
noname - 25 Mar 2005 21:59 GMT
I locksmith could get into it easy.
The back seat will come out if you take the lower half out then take the
seat belt bolts out then pull up on the seat and lift it out.
You can then use a pair of pliers tied to broom handles to get to the back
of the pin to turn it.

> I have an 88 z24 and I found out today that my trunk lock will not turn.
> I have tried penetrating oil, wd40, and white lithium grease, but the
[quoted text clipped - 5 lines]
>
> Thanks for any advice.
451CTDS - 26 Mar 2005 03:52 GMT
> I have an 88 z24 and I found out today that my trunk lock will not turn.
>  snip

   >>>   Could be a faulty key  ?    Does it fit other locks  ?

       I've had duplicate keys fit sometimes, and not other, or work
great on some cylinders, poorly on others .

    Drive to a locksmith, they can pick it in a minute or two.
Paradox - 26 Mar 2005 04:08 GMT
> > I have an 88 z24 and I found out today that my trunk lock will not turn.
> >  snip
[quoted text clipped - 5 lines]
>
>      Drive to a locksmith, they can pick it in a minute or two.

Which is why you always get a key cut at the dealership from the key code,
cutting a copy of a key from a copy ends up degrading the quality...
Chachi - 26 Mar 2005 06:50 GMT
>> I have an 88 z24 and I found out today that my trunk lock will not
>> turn.  snip
[quoted text clipped - 5 lines]
>
>     Drive to a locksmith, they can pick it in a minute or two.

It's not a faulty key, the lock assembly is only 1 year old, and had a
new set of keys. Neither key works in the cylinder. It was seized
because when I got the trunk open and pulled it out, the cylinder was
encrusted with sand, salt, dirt, etc. I bought another lock cylinder
which came with new keys, and it works fine, I just have to remember to
lube it a few times during the winter to get all the crud out.
451CTDS - 26 Mar 2005 17:32 GMT
  > snip
w set of keys. Neither key works in the cylinder. It was seized
> because when I got the trunk open and pulled it out, the cylinder was
> encrusted with sand, salt, dirt, etc. I bought another lock cylinder
> which came with new keys, and it works fine, I just have to remember to
> lube it a few times during the winter to get all the crud out.

  >>>>  Consider putting a refridgerator magnet over the cylinder
before driving under salty conditions.  Too bad the car makers didn't
consider this
Ted Mittelstaedt - 27 Mar 2005 09:24 GMT
> > I have an 88 z24 and I found out today that my trunk lock will not turn.
> >  snip
[quoted text clipped - 5 lines]
>
>      Drive to a locksmith, they can pick it in a minute or two.

pick it yourself, it's easy.  Instructions are on the Internet.

Ted
Chachi - 27 Mar 2005 15:26 GMT
>>>I have an 88 z24 and I found out today that my trunk lock will not turn.
>>> snip
[quoted text clipped - 9 lines]
>
> Ted

Turned out to be a seized up tumbler in the cylinder. Replaced it and
all was fine.
 
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