Black plate (11,1)Chevrolet Tahoe Police and Special Service Packages - 2013 - CRC - 3/30/12
Special Equipment Options 15-11
Exterior Lamp
Emergency Flashing
System - SEO 6J7
SEO 6J7 provides a high-beam
headlamps flashing module, rear
lamps flashing and control wire for a
customer-furnished switch to turn
the module on or off. The flasher
control wire is coiled under the
center of the instrument panel. This
control lead may be combined with
the interior wiring leads for SEO 6J3
when that option is ordered with
SEO 6J7.
The headlamps flashing module is
located below the passenger side
front headlamp and forward of the
passenger side front wheel. The
module is connected to an inline
connector in the forward lamp
harness. The headlamps flashing
module is activated by the
application of 12 volts to a dark
green/red wire coiled in the
passenger side footwell.When activated, the driver and
passenger side high-beam
headlamps and the high-beam
instrument panel cluster light will
flash alternately at 2.4 flashes per
second.
When the headlamps flashing
module is turned on, the module
sends a signal to the Body Control
Module (BCM). The BCM alternately
flashes the stop lamps and backup
lamps. Depressing the brake pedal
will override the stop lamp flashing
and placing the transmission in
reverse will override the backup
lamp flashing.
Activation of the headlamp and
rearlamp flashing can be separated
by opening the dark-blue/yellow
BCM circuit at the flasher module
connector, C122–F, and applying a
customer-switched ground to the
harness side of the wire in the
connector.
During daylight conditions, the
Daytime Running Lamps (DRL) are
automatically turned off whenever
the headlamps flasher module is
activated. During nighttime
conditions, the low-beam
headlamps turn on automatically
while the high-beam headlamps
flash. Turning on the high-beam
headlamps manually with the turn
signal/multifunction lever will
override the flashing module and
the high-beam headlamps will
operate continuously.
Black plate (22,1)Chevrolet Tahoe Police and Special Service Packages - 2013 - CRC - 3/30/12
15-22 Special Equipment Options
Wiring Provisions for
Vehicle Grille Lamps and
Speaker/Siren - SEO 6J3
Alternating Signal Flasher
A. Blunt cut ends for the Customer-Furnished Grille
Lamps and Customer-Furnished
Siren/Speaker
B. Control Wires from In-Line Connector in
Forward Lamp Harness for
Customer-Furnished Grille
Lamps and Speaker The SEO 6J3 wiring provision option
consists of a 1.5 m (5 ft) wiring
harness coiled underneath the
instrument panel on the passenger
side. The wiring circuits are routed
from underneath the instrument
panel to a 30 cm (1 ft) coil secured
in the area behind the grille. There
are four 1.0 mm² (16 gauge) wires
for connecting to the grille lights
(GRY, TAN) and siren speaker
(LT BU, LT GN)
The SEO 6J3 wiring provision also
includes one 0.8 mm² (18 gauge)
control wire for the SEO 6J7 exterior
lamps emergency flashing system.
When option SEO 6J7 is installed
without option SEO 6J3, only the
dark green/red control wire is
provided for connection to
customer-furnished 12-volt
switching to turn the emergency
flashing system on or off.
