Testing the Electric Trunk Release

Question edited for clarity.
Question moved from Television and Video category.

Normally you remove the back seat back, and pull the emergency release. Or a mobile locksmith can get in. If the lock is worn, any similar shape key may work with some jiggling. Also look in the glove box for a release button.

I just found this in your Owner Manual for Cutlass Supreme

Remote Trunk Release (OPTION) Press the yellow trunk release button located under the instrument panel on the driver's side. Your automatic transaxle must be in P (Park). Remember that your trunk can be opened at any time using the lock release. Be sure to lock your doors

and also access into the back.

Trunk Access Panel If you have split rear seats, you may have a trunk access panel for storing long objects like skis. Pull your rear armrest down using the strap. Then pull the latch on the trunk access panel towards you to open the panel. To close the access panel lift the latch.

https://carmanuals2.com/get/oldsmobile-cutlass-supreme-1993-owner-s-manual-79185

Videos regarding a locked trunk.

https://www.google.com/search?q=open+the+trunk+on+93+oldsmobile+cutlass+ciera+without+key

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If there is not a release below the steering column check in side the glove box for a trunk release/reset.
https://www.youtube.com/watch?v=6I7U6N3hsko
This info below is taken from the link above. It could be the trunk release has been deactivated,
http://www.lexusofpleasanton.com - Many luxury cars feature an electronic trunk release button to open your trunk lid. However as a security feature, all Lexus sedans feature a Valet Function to "lock" out access to your trunk. A common mistake is accidently activating this feature when reaching into the glove compartment. Here are the basics on how to use this convenient safety feature.

I suggest getting a helper. While you sit in the vehicle and press the button inside the passenger glove box, ask your friend to lift the trunk. If your friend can open the trunk easily, your torsion bar needs to be replaced. This acts a bit like a spring to push the trunk open when the lock releases it. Another issue could be the lock release has gummed up with dust in the lock grease. You vehicle is 21 years old and grease thickens up with dust and such over the years.






Good luck.
Semper Fi,
Z

If it has the electric trunk release, the button could be in the glove box.
Otherwise you may have to remove the back seat to gain entry to the trunk.

check your fuses to the trunk lock and its power relays also check the button and wiring for opens or shorts (normally a broken wire between the button and the power lock is culprit)

The trunk release button should be located in the glove box. mine is a yellow button and yours should be too.

Does the key you have open the driver door? Do you have a keyless entry key fob, does it work? you also might try removing the glove box and disconnecting the wires from the trunk button and touching them together with a paper clip or other small wire but before you do that look in your owners manual a determine which fuse is for the trunk release and check the fuse then the last would be to have GM dealer check to see if the key you have is the proper key fror your car and if it may be worn out

Here is how I done it with my 2002 Sebring LimitedIf the car has a release button on dashboard but you don't have keys to turn on ignition, (they locked in trunk) remove fuse cover (end of dash drivers side) remove fuse marked for dash lights and PRND1234 leave for 2 or 3 min then while holding trunk release button re-insert fuse and trunk release should work

You can pull off the back seats. If they do not fold down they will have medal clips on the back of the seats. You will have to pull up hard and when they release pull forward. Takes some muscle to get it off. Do not pull forward until the seat is off all the clips or else you will bend the clips and the seat will not go back on flush as it is now.

Is the key you are using green? If so, it is the Valet Key and it will only lock the door - it will not work on the glove box or the trunk.