Cadillac 1999 Escalade Owner's Manual page 296

Fog Lamps
The fog lamp bulb assembly is located under the
front bumper.
1. Remove the fog lamp bulb socket by turning it
counterclockwise.
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2. Remove the connector from the bulb by lifting the
tabs on the sides of the connector.
3. Insert the new bulb into the connector until the tabs
lock into the connector.
4. Insert the fog lamp bulb socket into the fog lamp
housing and turn it clockwise one
yellowblue
-
quarter of a turn.