2011 CHEVROLET SILVERADO wheel

Black plate (117,1)Chevrolet Silverado Owner Manual - 2011
Driving and Operating 9-117
StabiliTrak systems to activate,
power sent to the trailer's brakes
will be automatically adjusted to
minimize trailer wheel lock-up.
This does not imply that the trailer
has StabiliTrak.
2500 and 3500 series vehicles with
StabiliTrak have a Trailer Sway
Control (TSC) feature. SeeTrailer
Sway Control (TSC) on page 9‑123.
2500 and 3500 series vehicles
with StabiliTrak have a Hill Start
Assist (HSA) feature. See Hill Start
Assist (HSA) on page 9‑70.
If the vehicle’s brake, antilock
brake, or StabiliTrak systems are
not functioning properly, the ITBC
system may not be fully functional
or may not function at all. Make
sure all of these systems are
fully operational to ensure full
functionality of the ITBC system.
The ITBC system is powered
through the vehicle's electrical
system. Turning the ignition off
will also turn off the ITBC system. The ITBC system is fully functional
only when the ignition is in ON or
in RUN.
The ITBC system can only be used
with trailers with electric brakes.
{WARNING
Connecting a trailer that is not
compatible with the ITBC system
may result in reduced or complete
loss of trailer braking. There may
be an increase in stopping
distance or trailer instability which
could result in personal injury or
damage to the vehicle, trailer,
or other property. An aftermarket
controller may be available for
use with trailers with surge, air,
or electric‐over‐hydraulic trailer
brake systems. To determine the
type of brakes on the trailer and
the availability of controllers,
check with your trailer
manufacturer or dealer.
When trailering, make sure of the
following:
.The ITBC system is used only
with trailers that are equipped
with electric brakes.
.All applicable local and federal
laws and regulations are
followed.
.All electrical and mechanical
connections to the trailer are
made correctly.
.The trailer
’s brakes are in proper
working condition.
.The trailer and vehicle are
properly loaded for the towing
condition.
The ITBC system is a
factory-installed item. Out‐of‐factory
installation of this system should not
be attempted. GM is not responsible
for warranty or performance of the
system resulting from out‐of‐factory
installation.

Black plate (121,1)Chevrolet Silverado Owner Manual - 2011
Driving and Operating 9-121
.In the Trailer Output display
on the DIC,“- - - - - -”will
disappear if there is no
error present. Connecting
a trailer without electric
brakes will not clear the
six dashed lines.
4. Adjust the Trailer Gain by using the gain adjustment (+ / -)
buttons on the Trailer Brake
Control Panel.
5. Drive the vehicle with the trailer attached on a level road surface
representative of the towing
condition and free of traffic at
about 32 to 40 km/h (20 to
25 mph) and fully apply the
Manual Trailer Brake Apply
Lever.
Adjusting trailer gain at speeds
lower than 32 to 40 km/h
(20 to 25 mph) may result
in an incorrect gain setting. 6. Adjust the Trailer Gain to just
below the point of trailer wheel
lock-up, indicated by trailer
wheel squeal or tire smoke
when a trailer wheel locks.
Trailer wheel lock-up may not
occur if towing a heavily loaded
trailer. In this case, adjust the
Trailer Gain to the highest
allowable setting for the towing
condition.
7. Re-adjust Trailer Gain any time vehicle loading, trailer loading or
road surface conditions change
or if trailer wheel lock-up is
noticed at any time while towing.
Other ITBC-Related DIC Messages
In addition to displaying TRAILER
GAIN and TRAILER OUTPUT
through the DIC, trailer connection
and ITBC system status are
displayed on the DIC.
TRAILER CONNECTED: This
message will be briefly displayed
when a trailer with electric brakes
is first connected to the vehicle. This message will automatically turn
off in about 10 seconds. The driver
can also acknowledge this message
before it automatically turns off.
CHECK TRAILER WIRING: This
message will be displayed if:
1. The ITBC system first
determines connection to a
trailer with electric brakes and
then the trailer harness becomes
disconnected from the vehicle.
If the disconnect occurs while
the vehicle is stationary, this
message will automatically
turn off in about 30 seconds.
This message will also turn off if
the driver acknowledges this
message or if the trailer harness
is re-connected.
If the disconnect occurs while
the vehicle is moving, this
message will continue until
the ignition is turned off.
This message will also turn
off if the driver acknowledges
this message or if the trailer
harness is re-connected.

Black plate (125,1)Chevrolet Silverado Owner Manual - 2011
Driving and Operating 9-125
United States
CanadaIn order to calculate the amount of
weight any front accessory, such as
a snow plow, is adding to the front
axle, use the following formula:
(W x (A + W.B.)) /W.B.= Weight the
accessory is adding to the
front axle.
Where:
W = Weight of added accessory
A = Distance that the accessory
is in front of the front axle
W.B. = Vehicle Wheelbase For example, adding a 318 kg
(700 lb) snow plow actually adds
more than 318 kg (700 lbs) to the
front axle. Using the formula, if the
snow plow is 122 cm (4 ft) in front of
the front axle and the wheel base is
305 cm (10 ft), then:
W = 318 kg (700 lb)
A = 122 cm (4 ft)
W.B. = 305 cm (10 ft)
(W x (A + W.B.))/W.B. =
(700 x (4 + 10))/10 = 445 kg (980 lbs)
So, if the front axle reserve capacity
is more than 445 kg (980 lbs), you
could add the snow plow without
exceeding the front GAWR.
You can add heavier equipment
on the front of the vehicle if you
compensate for it by carrying fewer
passengers, less cargo, or by
positioning cargo toward the rear.

Black plate (1,1)Chevrolet Silverado Owner Manual - 2011
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-3
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Oil . . . . . . . . . . . . . . . . . . . 10-7
Engine Oil Life System . . . . . . 10-9
Automatic Transmission Fluid (4-Speed Transmission) . . . 10-11
Automatic Transmission Fluid (6-Speed
Transmission) . . . . . . . . . . . . . 10-14 Manual Transmission
Fluid . . . . . . . . . . . . . . . . . . . . . . 10-17
Hydraulic Clutch . . . . . . . . . . . . 10-17
Engine Air Cleaner/Filter . . . . 10-18
Cooling System . . . . . . . . . . . . 10-19
Engine Coolant . . . . . . . . . . . . . 10-20
Engine Overheating . . . . . . . . 10-24
Overheated Engine Protection
Operating Mode . . . . . . . . . . . 10-26
Engine Fan . . . . . . . . . . . . . . . . . 10-26
Power Steering Fluid . . . . . . . 10-27
Washer Fluid . . . . . . . . . . . . . . . 10-28
Brakes . . . . . . . . . . . . . . . . . . . . . 10-29
Brake Fluid . . . . . . . . . . . . . . . . . 10-30
Battery . . . . . . . . . . . . . . . . . . . . . 10-32
Four-Wheel Drive . . . . . . . . . . . 10-32
Front Axle . . . . . . . . . . . . . . . . . . 10-34
Rear Axle . . . . . . . . . . . . . . . . . . 10-35
Noise Control System . . . . . . 10-36
Starter Switch Check . . . . . . . 10-37
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-38
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-38 Park Brake and P (Park)
Mechanism Check . . . . . . . . 10-39
Wiper Blade Replacement . . . . . . . . . . . . . . 10-39
Glass Replacement . . . . . . . . 10-40
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-40
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-43
Halogen Bulbs . . . . . . . . . . . . . . 10-43
Headlamps (Silverado) . . . . . 10-43
Pick-Up Box Identification
and Fender Marker
Lamps . . . . . . . . . . . . . . . . . . . . 10-44
Taillamps (Chassis Cab Models) . . . . . . . . . . . . . . . . . . . 10-44
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . 10-45
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . 10-45
License Plate Lamp . . . . . . . . 10-46
Replacement Bulbs . . . . . . . . . 10-46

Black plate (2,1)Chevrolet Silverado Owner Manual - 2011
10-2 Vehicle Care
Electrical System
Electrical SystemOverload . . . . . . . . . . . . . . . . . . 10-47
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-48
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . 10-48
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-52
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-55
Tire Sidewall Labeling . . . . . . 10-56
Tire Designations . . . . . . . . . . . 10-59
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . 10-60
Tire Pressure . . . . . . . . . . . . . . . 10-63
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . 10-65
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . 10-65 Tire Pressure Monitor
Operation . . . . . . . . . . . . . . . . . 10-67
Tire Inspection . . . . . . . . . . . . . . 10-71
Tire Rotation . . . . . . . . . . . . . . . 10-71
Dual Tire Rotation . . . . . . . . . . 10-73
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . 10-74
Buying New Tires . . . . . . . . . . . 10-75
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . 10-77
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . 10-78
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . 10-79
Wheel Replacement . . . . . . . . 10-80
Tire Chains . . . . . . . . . . . . . . . . . 10-81
If a Tire Goes Flat . . . . . . . . . . 10-81
Tire Changing . . . . . . . . . . . . . . 10-83
Full-Size Spare Tire . . . . . . . . 10-95
Jump Starting
Jump Starting . . . . . . . . . . . . . . 10-96
Towing
Towing the Vehicle . . . . . . . . 10-101
Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . 10-101
Appearance Care
Exterior Care . . . . . . . . . . . . . . 10-106
Interior Care . . . . . . . . . . . . . . . 10-111
Floor Mats . . . . . . . . . . . . . . . . . 10-114

Black plate (29,1)Chevrolet Silverado Owner Manual - 2011
Vehicle Care 10-29
Brakes
This vehicle has front disc brakes
and could have rear drum brakes or
rear disc brakes.
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be
heard all the time the vehicle is
moving, except when applying
the brake pedal firmly.
{WARNING
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have
the vehicle serviced.Notice:
Continuing to drive with
worn-out brake pads could result
in costly brake repair.
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear and
evenly tighten wheel nuts in
the proper sequence to torque
specifications in Capacities and
Specifications on page 12‑2.
If the vehicle has rear drum brakes,
they do not have wear indicators,
but if a rear brake rubbing noise is
heard, have the rear brake linings
inspected immediately. Rear brake
drums should be removed and
inspected each time the tires are
removed for rotation or changing. Drum brakes have an inspection
hole to inspect lining wear during
scheduled maintenance. When the
front brake pads are replaced, have
the rear brakes inspected, too.
Brake linings should always be
replaced as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal
does not return to normal height,
or if there is a rapid increase in
pedal travel. This could be a sign
that brake service might be
required.
Brake Adjustment
Every time the brakes are applied,
with or without the vehicle moving,
the brakes adjust for wear.

Black plate (32,1)Chevrolet Silverado Owner Manual - 2011
10-32 Vehicle Care
Battery
If the vehicle is a Hybrid, see
the Hybrid Supplement for more
information.
This vehicle has a maintenance free
battery (or batteries). Refer to the
replacement number on the original
battery label when a new battery is
needed. SeeEngine Compartment
Overview
on page 10‑6for battery
location.
{DANGER
Battery posts, terminals, and
related accessories contain lead
and lead compounds, chemicals
known to the State of California
to cause cancer and reproductive
harm. Wash hands after handling.
Vehicle Storage
{WARNING
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you are
not careful. See Jump Starting
on
page 10‑96
for tips on working
around a battery without
getting hurt.
Infrequent Usage: Remove the
black, negative (−) cable from the
battery to keep the battery from
running down.
Extended Storage: Remove the
black, negative (−) cable from the
battery or use a battery trickle
charger.
Four-Wheel Drive
Transfer Case
When to Check Lubricant
Refer to Scheduled Maintenance
on
page 11‑2to determine when to
check the lubricant.
How to Check Lubricant
Electric Shift Transfer Case
A. Fill Plug
B. Drain Plug

Black plate (53,1)Chevrolet Silverado Owner Manual - 2011
Vehicle Care 10-53
The vehicle may not use all of the
fuses shown.Fuses Usage
1 Rear Seats
2 Rear Accessory
Power Outlet
3 Steering Wheel
Controls Backlight
4 Driver Door Module
5 Dome Lamps, Driver
Side Turn Signal
6 Driver Side Turn
Signal, Stoplamp Fuses Usage
7 Instrument Panel
Back Lighting
8 Passenger Side Turn
Signal, Stoplamp
9 Passenger Door
Module, Driver Unlock
10 Power Door Lock 2
(Unlock Feature)
11 Power Door Lock 2
(Lock Feature)
12 Stoplamps, Center
High‐
Mounted
Stoplamp
13 Rear Climate Controls
14 Power Mirror
15 Body Control
Module (BCM)
16 Accessory Power
Outlets Fuses Usage
17 Interior Lamps
18 Power Door Lock 1
(Unlock Feature)
19 Rear Seat
Entertainment
20 Ultrasonic Rear
Parking Assist, Power
Liftgate
21 Power Door Lock 1
(Lock Feature)
22 Driver Information
Center (DIC)
23 Rear Wiper
24 Cooled Seats
25 Driver Seat Module,
Remote Keyless Entry
System
26 Driver Power Door
Lock (Unlock Feature)