the driver's door on my '86 SE is keyed differently from the passenger and truck locks.

I suspect that someone replaced the door but didn't bother replacing the lock.

I'd like to either 1) get a lock to fit my existing key, or 2) get all new locks that will have the same key, INCLUDING the trunk.

Obviously, #1 would be the least amount of labor.

I know that they only made so many varieties of lock, is there a way to figure out my lock number for the passenger side so that I can buy that specific lock?


Currently, when I want to get in the car, I have to unlock the passenger side, crawl through, and unlock the driver's side.

Fierostore sells new door lock sets with matched keys but they only have the trunk lock for Notchbacks, not the GT model. I would imagine a locksmith could re-pin the locks to match.

quote Originally posted by IMSA GT: Fierostore sells new door lock sets with matched keys but they only have the trunk lock for Notchbacks, not the GT model. I would imagine a locksmith could re-pin the locks to match.

Ah, yes, the non-existent GT trunk lock. Unobtanium, new. Eventually I'll have to re-key my GT, but I'm talking about my SE.

I'd prefer to keep my existing key. Not sure how much damage the lock has to sustain to disassemble it, and still be viable. Hopefully, none.

Maybe in the short term I'll just swap the driver's and passenger locks over, they're not directional, are they?

door locks and blanks are different then others.
Isn't just simple repin them.

Are "Rules" somewhere in archives to make a 1 key GM car.

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

quote Originally posted by theogre: door locks and blanks are different then others. Isn't just simple repin them. Are "Rules" somewhere in archives to make a 1 key GM car.

I read a thread from Patrick, which seems to indicate that there were eight possible Fiero keys. The thread indicated that that was for the '88 year, now I'm wondering if that extends to the other years, also. Not that all Fieros have just those eight keys, but each model year having a specific number of possibilities.

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Arthur Peale

Most Fiero door/trunk blanks won't fit Ignition or other way around or never work in each other depending on actual keys used for a year or even on a given car. I don't have data how many profiles GM uses over the years. May change profiles in "batches" of like X # of years. IOW most or all 84 models may have different profile then next year or later/early years.

In my car, the Ignition blank and lock has an extra groove to keep out door keys. But after replacing the I-lock w/ aftermarket lock a few years ago, the door key blank easily fits. (OE I-lock worn a lot causes problems that need replacing.)

Not sure what GM thinking had Doors separate from I-key. Maybe with 1 key for doors and trunk so can give kids etc to get crap in/out of car but can't drive w/o ignition key. Maybe was required to meet FMVSS or other rules at the time.

In your and other cases... may need 3+ blanks to work because maybe different year(s) and blank for 1 door etc unless you check both doors and trunk to take a key even if doesn't turn from mismatch tumblers.

Many years of GM cars had different locks w/ matching blanks for whatever setup GM used for a specific model. W/ most had 2 keys for different things.

Example: Many had doors and I-key on 1 key. While Truck and locking glove box on another key.
Not just GM but Ford and Chrysler had this setup too on some models. Maybe some cars still used this setup but I haven't see this in decades. (Last I remember is Early Chrysler mini vans had locking box under P-side seat. Many new cars only have key locks for Ignition and driver's door.)

Why?
For safety/security/both Plus Unlike Fiero w/ Power Truck Release On 24/7 and in plain site for anyone to F with...
Many "Power"/Remote Trunk Release had the cabin control hidden in the locking glove box so valet etc can't get in the truck even having the I-key. ("power" because many were vacuum operated not electric.)
Was not like now where many back seats fold to get into the trunk. Not just SUV w/ that setup...
I change the power wire to work only w/ I-key On for safety/security reasons See my Cave, Trunk Safety