Horn
Pressa 
on the steering wheel pad
to sound the horn.
See also:
Instrument Panel Illumination Control
This control is located on the instrument panel, to the left of the steering
column.
(Instrument Panel Brightness): Turn
clockwise or counterclockwise to brighten or dim the lights. ...
Trailer Gain and Output
On vehicles with the Integrated Trailer Brake Control (ITBC) system, the trailer brake display appears in the DIC. Press the trip odometer reset stem until TRAILER GAIN and OUTPUT display.
TRAILER GA ...
Engine Hours
To display the ENGINE HOURS, place the ignition in LOCK/OFF or ACC/ACCESSORY, then press and hold the trip odometer reset stem for four seconds while viewing the ODOMETER. This display shows the total ...