Page 46 of 60

Black plate (16,1)Chevrolet Tahoe Police and Special Service Packages - 2013 - CRC - 3/30/12
15-16 Special Equipment Options
5. As one person watches the roofhole from the outside for the end
of the harness, a second person
from the inside of the vehicle
should snake the harness
toward the hole.
6. Pull out the wiring harness being careful to avoid scraping the
insulation on the edge of
the hole.
7. Extend the wiring harness to the accessory.
8. Connect the dark green wire to the accessory hot terminal.
9. Connect the black wire to the accessory ground terminal.
10. Cover the hole in the roof with a durable sealant such as
silicone rubber sealer.
11. Reinstall the overhead console access panel/lamp lenses. Option B: Use Wiring Harness
Package 12150250. Obtain from
GM Service Parts through the
GM Dealership
1. Drill a 32 mm (1.25 in) hole in
the outer roof panel in the area
shown in the illustration. The
hole should only go through the
outer panel. Remove all sharp
edges from the drilled hole.
2. Remove the inside overhead console access panel/lamp
lenses.
3. The accessory harness is coil tied to the passenger side of the
vehicle at the console inner
bracket.
4. Cut the tape holding the harness coil.
5. As one person watches the roof hole from the outside for the end
of the harness, a second person
from the inside of the vehicle
should snake the harness
toward the hole. 6. Pull out the wiring harness being
careful to avoid scraping the
insulation on the edge of
the hole.
7. Cut the wire to length. Install terminals to wire ends and insert
into the connector. The dark
green wire goes to cavity A and
the black wire in cavity B. Push
in the secondary lock to retain
the wires.
8. Attach the harness assembly from the package to the
accessory. Cover with the
supplied conduit for added
protection. Connect the orange
wire to the accessory hot
terminal and the black wire to
the ground.
9. Complete the connection from the roof harness to the extension
harness. Cover the mated
connector with the supplied
foam. Push the foam covered
connection and excess wire
through the roof panel hole.
Page 47 of 60

Black plate (17,1)Chevrolet Tahoe Police and Special Service Packages - 2013 - CRC - 3/30/12
Special Equipment Options 15-17
10. Reinstall the overhead consoleaccess panel/lamp lenses.
Restoring Power
The auxiliary lamp switch is located
on the overhead console.
This switch includes wiring
provisions for a dealer or a qualified
service center to install an auxiliary
roof lamp. When the wiring is
connected to an auxiliary roof
mounted lamp, pressing the bottom
of the switch will activate the lamp
and illuminate an indicator light at
the bottom of the switch. Pressing the top of the switch again
will turn off the roof mounted lamp
and indicator.
1. Be sure that the auxiliary lamp
switch is off.
2. Vacate the vehicle and reconnect the battery cable.
3. Turn the auxiliary lamp switch on. The accessory should now
be working. If it is not working,
check the connections.
4. After ensuring that the accessory is working properly,
install the grommet in the hole.
Seal with silicone sealer to
prevent water leakage.
Notice: Overloading the vehicle's
electrical system may damage
your vehicle's accessories.
Do not overload the vehicle's
system by having unnecessary
accessories on at the same time.
Option B
A. Black Wire
B. Orange Wire
C. To Roof Mounted Lamp
D. Harness Assembly
E. Grommet (Roof)
F. Foam Insulator (Adhesive‐ Backed)
G. Harness Connector, Secondary Lock and Terminal
H. Dark Green and Black Wires
I. Vehicle Outer Roof Panel
Page 49 of 60
Black plate (19,1)Chevrolet Tahoe Police and Special Service Packages - 2013 - CRC - 3/30/12
Special Equipment Options 15-19
Maintenance
The emergency roof light circuit is
fed from the fuse labeled Sunroof
located in the underhood electrical
center. Always replace the fuse with
a 30 amp mini-fuse.
Page 60 of 60

Black plate (4,1)Chevrolet Tahoe Police and Special Service Packages - 2013 - CRC - 3/30/12
i-4 INDEX
T
TiresPressure Monitor System . . . . . 10-1
Towing Trailer . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
U
Using This Supplement . . . . . . . . . . . iii
V
Vehicle
Canadian Owners . . . . . . . . . . . . . . . ii
Load Limits . . . . . . . . . . . . . . . . . . . . 9-1
W
WindowsInactive Rear Door -SEO 6N5 . . . . . . . . . . . . . . . . . . 15-14
Wiring Provisions 12-Volt Battery PowerSupply . . . . . . . . . . . . . . . . . . . . . . 15-3
Emergency Vehicle Roof Light - SEO TRW . . . . . . . . . 15-15
Front Speakers - SEO WX7 . . . . . . . . . . . . . . . . . 15-24
Horn/Siren Circuit - SEO 6J4 . . . . . . . . . . . . . . . . . . 15-20
Vehicle Grille Lamps, and Speaker/Siren -
SEO 6J3 . . . . . . . . . . . . . . . . . . 15-22
Wiring Provisions - SEO 6J3 . . . . . . . . . . . . . . . . . . . . 15-22