Not really... IIRC, the ignition uses a different blank than the rest of the car, so it's not as simple as putting new tumblers in and matching it to the other locks.
In other words, even if the cut pattern is the same, I don't think the key will fit into the slot.
GM ignition lock cylinders use a square top key and the door/trunk cylinders use the round key. The grooves on the sides of the keys are different so they won't physically fit in the opposite cylinders regardless of the tumblers inside. You might have more luck trying to swap the guts in the doors to take a square top key. I'd go talk to a locksmith to see what's possible.
GM ignition lock cylinders use a square top key and the door/trunk cylinders use the round key. The grooves on the sides of the keys are different so they won't physically fit in the opposite cylinders regardless of the tumblers inside. You might have more luck trying to swap the guts in the doors to take a square top key. I'd go talk to a locksmith to see what's possible.
Not all are different, I've keyed several cars to a single key each. Currently my GT uses a single key. It's mostly a question of finding a key blank that will fit both cylinders, you can't necessarily use one of your existing keys.
It's been 7 or 8 years since I did it, but it is certainly do-able.
I have a very small milling machine (Unimat). It would be trivial to remove material along the long axis of KEY A to it would fit into either SLOT A or SLOT B. Then it's a matter of pulling the cylinder and moving the pins around...
actually, you would have to remove material from both sides of the key. A is Z shaped and B is S shaped. To remove enough material to get it to work, you would basically loose the entire bottom half of the key.
Why not remove the ridge from inside the ignition lock, so that you can just use an exterior key?
You would then need to get a set of exterior keys cut as ignition keys, but you would only have to modify one lock. Or you could modify the outside locks, and just use a standard ignition key for everything.
I think either would work just the same. Just a matter of what you want to do.
[This message has been edited by KillerFrogg (edited 04-17-2014).]
Also do not forget about the key lock tumbler right at the back of the key. That one is deeper than any of the other tumblers for anything else on the car, so when you are in the locks for the outside of the car, you may want to just remove that tumbler all together. With that notch still on the key, the key will lock in the ignition, but because you have removed that tumbler on all of the other locks they will ignore it.
[This message has been edited by KillerFrogg (edited 04-17-2014).]
Nothing has to be modified. Just take a door/trunk cylinder and the igjition cylinder to somewhere with a selection of key blanks, and test them till you find one that will insert into both, then recode the cylinders to match. It's not that hard, no cutting, or milling, or custom work of ajy kind.
This is an old topic. It has been done before, the way it was done IIRC was they cut another line down the length of the key. I forget who did it but it was a long time ago. Try search, you may be able to find it.
Edit to add: there are two different door key blanks for the Fiero, some Fiero keys will not in other Fieros. I know this for a fact as my 2 87s will not fit each other.
Looking at them now, I bet one door key might fit one of my IGN locks, I will have to try tomorrow if I remember.
[This message has been edited by sardonyx247 (edited 04-18-2014).]
The markings on my GT key say "Access+" and "7R" . That may or may not work in your cylinder, as stated above not all cylinders use the same blank pattern.
Web Electric used to have a write up where he ground a new groove into his key to allow the mod. Buddycraigg just had a locksmith take an A+B blank and cut it for his doors, then have the locksmith rekey the ignition switch to match. https://www.fiero.nl/forum/A...030819-2-034335.html
I wonder what the reason was initially for making them separate?
Probably some logistical reason... By having two keys, the ignition cylinder could be installed in the steering column (or dash on older cars) without having to be matched to the cylinders being installed in the doors and trunk. Particularly convenient if the steering columns come pre-assembled from some other factory.
Not sure if there was any truth to the story, but a long time ago I heard that because of the small number of tumblers there weren't that many combinations of keys. By having 1 key for the doors and another for the ignition, there was a much smaller chance that somebody could end up having a key that could get into your vehicle and start it. A friend of mine in Vancouver was able to open the doors of my neighbours pickup truck with his door key, but the ignition key didn't match.
In my opinion...they went to two keys just to make our lives miserable.
A long time ago GM had two keys but one would work the ignition and door and the other worked the trunk and glove box. Then they started keying the ignition key to be all by itself. I think the theory was you could give your door key to your kid or someone to get something out your car, or trunk but not drive off.
I shaved off my door handles so I have a trunk key and ignition key.
Would it be possible to install push button start so the key was not needed? If You did this You would want to have a secure alarm system. I have keyless entry so I am good as is, just wondering.
Not sure if there was any truth to the story, but a long time ago I heard that because of the small number of tumblers there weren't that many combinations of keys. By having 1 key for the doors and another for the ignition, there was a much smaller chance that somebody could end up having a key that could get into your vehicle and start it. ...
This makes as much sense as anything, along with the idea of the columns being assembled elsewhere. I used to be a locksmith, in a previous life. You could carry enough keys to open most any GM car on three 4" rings.
GM went to "one key fits all" about the same time that they added to the number of tumblers (and started making 'transponder" keys.)
Not sure if there was any truth to the story, but a long time ago I heard that because of the small number of tumblers there weren't that many combinations of keys. By having 1 key for the doors and another for the ignition, there was a much smaller chance that somebody could end up having a key that could get into your vehicle and start it. A friend of mine in Vancouver was able to open the doors of my neighbours pickup truck with his door key, but the ignition key didn't match.
Definitely plausible. I remember one time when I was a little kid, coming out of the grocery store with my mother, we got into the wrong Malibu. Was the exact same color and car, and the door key worked perfectly.
Definitely plausible. I remember one time when I was a little kid, coming out of the grocery store with my mother, we got into the wrong Malibu. Was the exact same color and car, and the door key worked perfectly.
This happened to me as well. Back in the 90s we had a fleet of Corsicas and a buddy and me got in the wrong one and the key opened the door and started it... we drove off as some other guy was screaming at us that we were stealing his car. I wouldn't have believed it if I didn't see it with my own eyes.
This is an old topic. It has been done before, the way it was done IIRC was they cut another line down the length of the key. I forget who did it but it was a long time ago. Try search, you may be able to find it.
Edit to add: there are two different door key blanks for the Fiero, some Fiero keys will not in other Fieros. I know this for a fact as my 2 87s will not fit each other.
Looking at them now, I bet one door key might fit one of my IGN locks, I will have to try tomorrow if I remember.
LOL, my door key from one of my 87s fits the IGN lock on my other 87, I didn't try the other way.
So yeah it is possible and sometimes real easy.
on the after note, my friend had a GN and started it up one time, then said wiat this is my Jeep key. Both keys still had the 'knock-out' in them and the codes even matched.
My brother had a ('73?) Challenger with a 318. One day, someone came up, unlocked it with a key, and drove off. Bye, bye car.
According to my 5 minutes of research if you steal a car with the keys it's not a felony. It's considered joy riding. So thieves love GM cars for joy riding. Some Chryslers also used the saginaw column and therefore have the same crappy ignition switch. You would think they would have fixed that at some point. Now with the lawsuits, they finally might.
