Chevrolet 1997 Monte Carlo Owner's Manual page 246

Also, for your audio system, see "Theft-Deterrent
Feature" in the Index.
Bulb Replacement
In this section you'll find directions for changing the
bulbs in some of the lamps on your Chevrolet. See
"Replacement Bulbs" in the Index to find the type of
bulb you should use.
Halogen Bulbs
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
Headlamps
1. Open the hood.
2. Press and turn the base a quarter-turn (to the left for the
driver's side; to the right for the passenger's side) and
remove it from the retaining ring by gently pulling it back
and away from the headlamp.
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3. Remove the electrical connector from the bulb by
raising the lock tab and pulling the connector away
from the bulb's base.
4.
Install the electrical connector to the bulb.
5. Install the new bulb by inserting the smallest tab on
the bulb base into the matching notch in the retaining
ring. Turn the bulb a quarter-turn to the right until
it stops.
6. Close the hood.