Bulb - Cab and Chassis

NOTE: The rear lamp unit contains two bulbs: the park/turn signal/brake/license plate, and the backup. The service procedures for each bulb are the same, only the bulb sizes and types may differ.

REMOVAL




1. Disconnect and isolate the battery negative cable.
2. Remove the four screws (1) that secure the lens (2) to the rear lamp unit housing (5).
3. Push the backup lamp bulb (4), or the park/turn signal/brake/license plate bulb (7) slightly into its socket (3) or (6), then rotate the bulb counterclockwise about 30 degrees to unlock it.
4. Pull the base of the bulb straight out of the socket.

INSTALLATION

CAUTION: Always use the correct bulb size and type for replacement. An incorrect bulb size or type may overheat and cause damage to the lamp, the socket and/or the lamp wiring.




1. Align the base of the backup lamp bulb (4), or the park/turn signal/brake/license plate lamp bulb (7) with its socket (3) or (6).
2. Push the bulb straight into the socket until the base is firmly seated, then rotate the bulb clockwise about 30 degrees to lock it into place.
3. Position the lens (2) to the rear lamp unit housing (5).
4. Install and tighten the four screws (1) that secure the lens to the housing. Tighten the screws to 2 N.m (20 in. lbs.).
5. Reconnect the battery negative cable.