Page 17 of 60
Black plate (3,1)Chevrolet Tahoe Police and Special Service Packages - 2012
Instruments and Controls 5-3
The Tahoe Special Service Package
instrument panel cluster is similar to
the Tahoe Police Package
instrument panel cluster, except that
the maximum speed displayed is
lower and additional indicators may
be present. See“Instrument Cluster”
in the Index of your owner manual
for more information.
Speedometer
Your speedometer lets you see your
speed in both miles per hour (mph)
and kilometers per hour (km/h). The speedometer for the Tahoe
Police Package (SEO PPV) displays
a maximum vehicle speed of
225 km/h (140 mph). The
speedometer for the Tahoe Special
Service Package (SEO 5W4)
displays a maximum vehicle speed
of 193 km/h (120 mph). The Tahoe
Special Service Package is not
designed nor intended for use in
high‐speed emergency vehicle
operations.
Odometer
Your odometer shows how far your
vehicle has been driven, either in
miles (United States) or kilometers
(Canada).
Information Displays
Driver Information
Center (DIC)
The Tahoe Police Package and
Special Service Packages do not
have DIC buttons. You can turn off
or acknowledge the available DIC
messages by using the trip
odometer reset stem located on the
instrument panel cluster.
The DIC will display engine running
hours.
See the owner manual for additional
information on the DIC.
Page 18 of 60
Black plate (4,1)Chevrolet Tahoe Police and Special Service Packages - 2012
5-4 Instruments and Controls
2NOTES
Page 19 of 60
Black plate (1,1)Chevrolet Tahoe Police and Special Service Packages - 2012
Lighting 6-1
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . 6-1
Exterior Lighting
Exterior Lamp Controls
The following exterior lighting
features apply to vehicles first sold
in the United States.
The vehicle has Daytime Running
Lamps (DRL) and an Automatic
Headlamp System (AHS). The DRL
and AHS can be turned to OFF with
the headlamp switch when the
transmission is in P (Park) and the
engine is at idle. If the engine is not
turned off, the DRL and AHS will
remain OFF when the transmission
is placed in gear. The vehicle may
be driven with the lamps off for one
ignition cycle.
The vehicle may have been built
with SEO 9G8, DRL AND AHS
DISABLE. This feature turns off
DRL and AHS and requires manual
control of the exterior lighting. See
your dealer to restore the DRL and
AHS to normal operation.For vehicles first sold in Canada,
the DRL and AHS can be turned off
if the transmission is in P (Park).
See the owner's manual for more
information.
Special Features
The following standard features are
disabled in the Police Package and
Special Service Package.
.Entry Lighting and Exit Lighting
.Remote Keyless Entry Feedback
(Horn Beep) and (Lamps Flash)
Automatic Door Locking is standard.
If you need it disabled, see your
dealer.
Page 20 of 60
Black plate (2,1)Chevrolet Tahoe Police and Special Service Packages - 2012
6-2 Lighting
2NOTES
Page 21 of 60
Black plate (1,1)Chevrolet Tahoe Police and Special Service Packages - 2012
Driving and Operating 9-1
Driving and
Operating
Driving Information
Vehicle Load Limits . . . . . . . . . . . 9-1
Starting and Operating
Fast Idle System . . . . . . . . . . . . . . 9-5
Towing
Trailer Towing . . . . . . . . . . . . . . . . . 9-5
Driving Information
Vehicle Load Limits
The information in this section of the
supplement is for those who intend
to install additional equipment to the
police vehicle after it has left the
factory, and for those who will be
driving and loading the vehicle with
passengers and/or cargo.Two labels on your vehicle show
how much weight it was designed to
carry, the Tire and Loading
Information label and the
Certification/Tire label. These labels
are attached to your vehicle and
give you the maximum load
capacity, the Gross Vehicle Weight
Rating (GVWR) and the Gross Axle
Weight Rating (GAWR) for your
vehicle. See
“Vehicle Load Limits” in
your owner manual Index for
additional loading information.
Page 22 of 60
Black plate (2,1)Chevrolet Tahoe Police and Special Service Packages - 2012
9-2 Driving and Operating
The following guidelines can help
you with proper loading and load
distribution when installing
additional equipment on the Tahoe
Police Package.
{WARNING
Do not load the vehicle any
heavier than the Gross
Vehicle Weight Rating
(GVWR), or either the
maximum front or rear Gross
Axle Weight Rating (GAWR).
This can cause systems to
break and change the way the
vehicle handles. This could
cause loss of control and a
crash. Overloading can also
shorten the life of the vehicle. Adding Equipment to Your
Vehicle
Before adding accessories or
equipment to your police vehicle,
there are some things you need
to know:
.The police vehicle's maximum
capacity weight.
.The weight of your police
vehicle, including a full tank of
fuel but without a driver and
passengers.
.The weight of items you plan on
adding to your police vehicle,
like roof mounted light bar(s),
push bumpers, security
barrier(s), rear storage
organizer, highway flares, fire
extinguishers, weapons,
ammunition, radios, and video
equipment.
.The weight and number of
passengers you intend to carry
in your vehicle.
.The total weight of any
additional cargo you intend to
carry in your vehicle.
When planning your vehicle
equipment installation remember not
to exceed the Gross Vehicle Weight
Rating (GVWR) or the Gross Axle
Weight Rating (GAWR) of the front
or rear axles. To keep the available
load weight less than the vehicle
capacity weight, you may need to
limit the number of passengers you
carry in your vehicle or change your
choice of additional equipment.
Page 23 of 60
Black plate (3,1)Chevrolet Tahoe Police and Special Service Packages - 2012
Driving and Operating 9-3
Center of Gravity (CG)
A vehicle's center of gravity is an
imaginary location inside the vehicle
and is a balance point for the
vehicle mass as it moves down the
road. The police vehicle's center of
gravity, before you add a load and
passengers, is approximately
midway between the center of the
axles, up from the ground to just
below the front window, and
between the driver and passenger.
Equipment location and weight on
the vehicle's center of gravity is
important to keep in mind when
planning an installation. Heavy
equipment should be positioned as
low and as far forward in the rear
load compartment as possible. Try
to mount the equipment below the
bottom of the side windows. Refer
to the Loading Zone chart and
diagram to help with your
installation plan.A procedure to make the necessary
measurements and formulas to
calculate the vehicle longitudinal,
lateral and vertical position of the
center of gravity can be found in the
GM Coachbuilders Manual.
Equipment required to conduct the
measurements for calculating the
center of gravity are:
.Weight scales of sufficient
capacity to measure the vehicle
weight at each wheel.
.A post‐type hoist or other means
to safely elevate the front of the
vehicle to at least an angle of
20 degrees above horizontal.
See your GM dealer to get more
information about this coachbuilder
procedure. Keeping the center of gravity
midway between the axles is also
important to provide proper braking
performance. About half the total
vehicle weight on each axle is
recommended.
Weigh your vehicle after the
additional equipment has been
installed to determine the actual
weight of your vehicle. Weigh the
vehicle with a full tank of fuel and
without passengers. You may need
to put a limit on how many people or
other equipment you can carry
inside your vehicle after the
additional equipment has been
installed.
Page 24 of 60
Black plate (4,1)Chevrolet Tahoe Police and Special Service Packages - 2012
9-4 Driving and Operating
Loading Zones
A. Front Floor to Roof Zone Area
B. Front Roof Zone Area
C. Back of Front Door
D. Rear Roof Zone Area
E. Rear Floor to Roof Zone Area
F. GroundLoading Zone Weight Chart
Loading Zones Front Axle
Weight Rear Axle
Weight Total
Roof 14 kg (30 lbs) 18 kg (41 lbs) 32 kg (71 lbs)
Floor to Roof 49 kg (108 lbs) 195 kg (429 lbs) 244 kg (537 lbs) Total 63 kg (138 lbs ) 213 kg (470 lbs) 276 kg (608 lbs)
Using heavier suspension
components to get added durability
might not change your weight
ratings. Ask your dealer to help you
load your vehicle the right way.
