Page 9 of 60

Black plate (3,1)Chevrolet Tahoe Police and Special Service Packages - 2013 - CRC - 3/30/12
Seats and Restraints 3-3
Notices for Customer
Installed Equipment
Read the following notices before
installing equipment on your
specialty vehicle.
Notice:GM-approved service
procedures must be followed
to remove and reinstall the
instrument panel to the pad in
order to ensure proper airbag
deployment.
Notice: Do not mount equipment
on the passenger side of the
instrument panel top pad
deployment zone. Equipment
should not be mounted on or
around the passenger airbag
opening because of a deploying
airbag. To allow the airbag to
perform as it was designed, do
not mount equipment inside the
airbag deployment zone. Notice:
The police vehicle has
roof-rail airbags. Do not mount a
security barrier such that the
ends of the barrier or brackets
are within the roof-rail
deployment zones.
Notice: The police vehicle has
roof-rail airbags and a rollover
sensor. The rollover sensor is
mounted on the centerline of the
vehicle between the driver and
right front passenger positions.
If the vehicle has bucket seats,
the rollover sensor will be
exposed. Do not mount
equipment within 25 mm (1 in) of
the rollover sensor. This may
affect the performance of the
airbag system. To allow the
airbags to perform as they are
designed, do not mount
equipment near this area. Notice:
Avoid installing wiring for
roof-rail emergency lighting or
radio antennas that may restrict
the proper deployment of the
roof-rail airbags.
Page 45 of 60

Black plate (15,1)Chevrolet Tahoe Police and Special Service Packages - 2013 - CRC - 3/30/12
Special Equipment Options 15-15
Wiring Provisions for
Emergency Vehicle Roof
Light - SEO TRW
Battery power is supplied through a
30 amp fuse to a wiring harness
located in the roof. Power is
controlled with a switch located in
the overhead console. The
customer or vehicle upfitter must
complete the installation to an
added accessory such as an
emergency beacon lamp.
Maximum rated electrical load is
21 amps (250 watts). The added
electrical requirements must not
exceed 21 amps (250 watts).
Running the accessory for long
periods of time with the engine off
may run the battery down.
Installation Instructions–
Emergency Vehicle Roof
Panel Lamp
Wiring to the accessory can be
done by either directly connecting
the wire in the roof to the accessory
(Option A) or by using Wiring Harness Package part number
12150250 obtained from GM
Service Parts (Option B).
A. 645 mm (25.39 in)
B. 440 mm (17.32 in)
C. 100 mm (3.94 in) square
D. Roof Centerline
E. Roof Edge
1. Disconnect the negative (−)
battery cable at the battery.
2. Make the electrical connections using either option A or option B. Notice:
Pulling the wiring
harness through a panel hole that
has sharp edges may cause
damage to the wire and/or wire
insulation. Remove sharp edges
from the panel hole before pulling
the wire through it.
Option A: Roof Wires Directly to
Accessory
1. Drill a 10 to 13 mm (3/8 in to 1/2 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.
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.