Chevrolet Low Cab Forward 4500 2019 Series Owner's Manual page 226

3. To install the lamps, perform
the same sequence of
operations in reverse, taking
care to turn the connector
clockwise to lock it securely.
If the socket is not locked securely,
water could get inside the lamp and
lead to a breakdown.
Replacing a Front Turn
Signal Lamp
Do not replace a bulb with other
than the specified wattage. This will
cause abnormal flashing,
particularly for turn signal lamps.
When replacing a bulb, make sure
the light switch is OFF.
1. While referring to Replacing
the Headlights , tilt the turn
signal lamp assembly down
toward the front of the vehicle
and remove it.
Vehicle Care
2. Disconnect the connector for
the turn signal light and then
remove the socket.
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