1. The Obvious (but Important) Checks:
* Steering Wheel: Is the steering wheel locked? Gently try jiggling the wheel while gently turning the key. Sometimes a slight movement is all it takes.
* Shift Lever: Make absolutely sure the car is in Park (or Neutral if it's a manual transmission). A stuck shift lever is a common cause.
* Key Condition: Examine the key itself. Is it bent, broken, or excessively worn? A damaged key can bind.
* Ignition Switch: Try turning the key very slightly back and forth a few times. Sometimes a bit of gentle persuasion will free it up. Don't force it!
2. Lubrication:
* Graphite Powder: This is your best friend. Lightly apply dry graphite powder (available at auto parts stores) into the keyhole. Let it sit for a few minutes to penetrate. Then, gently try turning the key. *Avoid using WD-40 or other lubricants as they can attract dirt and gum up the mechanism further.*
3. More Advanced Techniques (Proceed with Caution):
* Penetrating Oil (Use Sparingly): If graphite doesn't work, *consider a very small amount* of a penetrating oil like PB Blaster, specifically designed for freeing stuck parts. Apply a tiny drop directly into the keyhole and let it sit for at least 15-20 minutes. Avoid getting any on the ignition switch contacts.
* Gentle Tapping: With the key still in the ignition, very gently tap the ignition area with a small hammer (wrapped in cloth to avoid scratching). This can sometimes dislodge any binding. Do this with extreme caution and only apply very light taps.
4. When All Else Fails:
If none of the above work, you'll likely need professional help:
* Locksmith: This is the best option. A locksmith has specialized tools and expertise to safely remove the key without damaging the ignition cylinder. They can also replace the cylinder if necessary.
* Tow Truck: If the car is undriveable and you need it moved, a tow truck is the solution.
Important Warnings:
* Avoid forcing the key: Forcing the key can break the key or damage the ignition cylinder, leading to far more expensive repairs.
* Don't use excessive force: This could permanently damage the ignition system.
* Be patient: Work slowly and methodically.
Remember, your 1989 Buick LeSabre is an older vehicle, and its ignition system might be more sensitive. If you're not comfortable attempting these solutions yourself, calling a locksmith is always the safest and most effective approach.