Chevrolet 1993 S-10 Pickup Owner's Manual page 63

Key Release Lever
The ignition key cannot be removed from the ignition
of
manual transmission
vehicles unless the key release lever is used.
To Remove the Key
Turn the key to the LO,CK position while pressing the key release lever down
at the same time. Keeping your finger on the lever, pull the key straight out.
On automatic transmission vehicles, turn the key to LOCK and pull it straight
out.
To Starz Your 2.5 -Liter (VIN Code A) L4 Engine:
1. Automatic Transmission:
Move your shift lever to P (Park) or N (Neutral). Your engine won't start
in any other position-that's a safety feature. To restart when you're
already moving, use N (Neutral) only.
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