1999 CHEVROLET SILVERADO park assist

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2-23
NOTICE:
If your rear wheels can't rotate, don't try to
drive. This might happen if you were stuck in
very deep sand or mud or were up against a solid
object. You could damage your transmission.
Also, if you stop when going uphill, don't hold
your vehicle there with only the accelerator
pedal. This could overheat and damage the
transmission. Use your brakes or shift into
PARK (P) to hold your vehicle in position
on a hill.
On cold days, approximately 32
F (0
C) or colder, your
transmission is designed to shift differently until the
engine reaches normal operating temperature. This is
intended to improve heater performance.
Tow/Haul Mode (Automatic Transmission)
Your vehicle is equipped with a tow/haul mode. The
selector switch is located on the end of the column shift
lever. You can use this feature to assist when towing or
hauling a heavy load. See ªTow/Haul Modeº in the
Index for more information.

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2-76
At approximately 265
F (130
C), the message center
will display a TRANS FLUID HOT message and the
transmission will enter a transmission protection mode.
When the transmission enters the protection mode, you
may notice a change in the transmission shifting
patterns. The transmission will return to normal shifting
patterns when the transmission fluid temperature falls
below 260
F (127
C).
See ªMessage Centerº in the Index for
further information.
If the transmission fluid reaches temperatures of
approximately 275
F (135
C) or greater, the message
center will display a TRANS HOT...IDLE ENG warning
message. Pull the vehicle off the roadway when it is safe
to do so. Set the parking brake, place the transmission in
PARK (P) and allow the engine to idle until the
transmission temperature falls below 260
F (127
C).
If the transmission continues to operate above 265
F
(130
C), please contact your nearest dealer or the
GM Roadside Assistance Center.
NOTICE:
If you keep driving your vehicle with the
transmission temperature gage above the normal
operating range, you can damage the
transmission. This could lead to costly repairs
that may not be covered under your warranty.
The following situations can cause the transmission to
operate at higher temperatures:

Towing a trailer

Hot outside air temperatures

Hauling a large or heavy load

Low transmission fluid level

High transmission fluid level

Restricted air flow to the radiator and the auxiliary
transmission oil cooler (if equipped).
A temporary solution to hotter transmission operating
temperatures may be to let the transmission cool down.
If the transmission is operated at higher temperatures on
a frequent basis, see ªScheduled Maintenanceº in the
Index for the proper transmission maintenance intervals.

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2-83
NOTICE:
If you keep driving your vehicle with the
transmission TRANS FLUID HOT message
displayed, you can damage the transmission.
This could lead to costly repairs that may not be
covered under your warranty.
The following situations can cause the transmission to
operate at higher temperatures:

Towing a trailer

Hot outside air temperatures

Hauling a large or heavy load

Low transmission fluid level

High transmission fluid level

Restricted air flow to the radiator and the auxiliary
transmission oil cooler (if equipped).
A temporary solution to hotter transmission operating
temperatures may be to let the transmission cool down.
If the transmission is operated at higher temperatures on
a frequent basis, see ªScheduled Maintenanceº in the
Index for the proper transmission maintenance intervals.
TRANS HOT...IDLE ENGINE
If you have an automatic transmission, you have a
transmission over
-temperature display contained in the
message center.
If this warning message is
displayed, pull the vehicle
off the roadway when it is
safe to do so.
Set the parking brake and place the transmission in
PARK (P). Idle the engine until the message center no
longer displays a message. If idling the engine does not
turn the warning message off after 10 to 15 minutes,
contact your nearest dealer or the GM Roadside
Assistance Center. See ªRoadside Assistanceº in
the Index.

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4-55
Tow/Haul Mode (If Equipped)
Tow/haul is a feature on automatic transmission
equipped vehicles that assists when pulling a heavy
trailer or a large or heavy load. The purpose of the
tow/haul mode is to:

Reduce the frequency and improve the predictability
of transmission shifts when pulling a heavy trailer or
a large or heavy load.

Provide the same solid shift feel when pulling a
heavy trailer or a large or heavy load as when the
vehicle is unloaded.

Improve control of vehicle speed while requiring less
throttle pedal activity when pulling a heavy trailer or
a large or heavy load.
Automatic transmission equipped vehicles are provided
with a button at the end of the shift lever which when
pressed enables tow/haul. When the button is pressed, a
light on the instrument panel will illuminate to indicate
that tow/haul has been selected. Tow/haul may be turned
off by pressing the button again, at which time the
indicator light on the instrument panel will turn off. The
vehicle will automatically turn off tow/haul every time it
is started.Tow/haul is designed to be most effective when the
vehicle and trailer combined weight is at least 75% of
the vehicle's Gross Combined Weight Rating (GCWR).
Tow/haul is most useful under the following
driving conditions:

When pulling a heavy trailer or a large or heavy load
through rolling terrain.

When pulling a heavy trailer or a large or heavy load
in stop and go traffic.

When pulling a heavy trailer or a large or heavy load
in busy parking lots where improved low speed
control of the vehicle is desired.
Operating the vehicle in tow/haul when lightly loaded or
with no trailer at all will not cause damage. However,
there is no benefit to the selection of tow/haul when the
vehicle is unloaded. Such a selection when unloaded
may result in unpleasant engine and transmission
driving characteristics and reduced fuel economy.
Tow/haul is recommended only when pulling a heavy
trailer or a large or heavy load.

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9-2
Before Leaving on a Long Trip 4-37 . . . . . . . . . . . . . . . . . . . .
Better Business Bureau Mediation 8-3 . . . . . . . . . . . . . . . . . . .
Blizzard, Driving In 4-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake
Adjustment 6
-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-34, 7-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Master Cylinder 6-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pedal Travel 6-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing System Parts 6-37 . . . . . . . . . . . . . . . . . . . . . . . .
System Warning Light 2-74 . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer 4-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmission Shift Interlock Check 7-21 . . . . . . . . . . . . . . .
Wear 6-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes, Anti-Lock 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking in Emergencies 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Break-In, New Vehicle 2-13 . . . . . . . . . . . . . . . . . . . . . . . . . .
BTSI Check 7-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Camper Type Mirror 2-59 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Camper Wiring Harness 4-52 . . . . . . . . . . . . . . . . . . . . . . . . . .
Canadian Roadside Assistance 8-7 . . . . . . . . . . . . . . . . . . . . . .
Capacities and Specifications 6-74 . . . . . . . . . . . . . . . . . . . . . .
Carbon Monoxide 2-39, 2-40, 4-43 . . . . . . . . . . . . . . . . . . . .
Care of Your Cassette Tape Player 3-27 . . . . . . . . . . . . . . . . . .
Cargo
Lamp 2
-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lamp Bulb Replacement 6-41 . . . . . . . . . . . . . . . . . . . . . . .
Lamp On Message 2-87 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Deck Service 7-18 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cassette Tape Player 3-11, 3-13 . . . . . . . . . . . . . . . . . . . . . . . Cassette Tape Player Care 3
-27 . . . . . . . . . . . . . . . . . . . . . . . .
Cassette/Compact Disc Storage 2-63, 2-64 . . . . . . . . . . . . . . .
Cellular Telephone 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center High-Mounted Stoplamp Bulb Replacement 6-41 . . . .
Center Overhead Console 2-60 . . . . . . . . . . . . . . . . . . . . . . . .
Center Passenger Position 1-36 . . . . . . . . . . . . . . . . . . . . . . . .
Certification Label 4-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certification/Tire Label 4-46 . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains, Safety 4-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains, Tire 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Change Engine Oil Message 2-86 . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat Tire 5-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Coolant Temp Message 2-84 . . . . . . . . . . . . . . . . . . . . .
Check Eng Oil Level Message 2-85, 6-12 . . . . . . . . . . . . . . . .
Check Eng Oil Pressure Message 2-85 . . . . . . . . . . . . . . . . . .
Checking Transmission Fluid 6-22 . . . . . . . . . . . . . . . . . . . . .
Checking Your Restraint Systems 1-66 . . . . . . . . . . . . . . . . . .
Chemical Paint Spotting 6-61 . . . . . . . . . . . . . . . . . . . . . . . . . .
Child Restraints 1-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing in a Rear Outside Seat Position 1-54 . . . . . . . . . . .
Securing in the Center Seat Position 1-56 . . . . . . . . . . . . . .
Securing in the Right Front Seat Position 1-58 . . . . . . . . . .
Top Strap 1-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where to Put 1-50, 1-51 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chrome Wheels, Cleaning 6-59 . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Breakers and Fuses 6-65 . . . . . . . . . . . . . . . . . . . . . . .
Cleaner, Air 6-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning
Aluminum Wheels 6
-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior Lamps/Lenses 6-58 . . . . . . . . . . . . . . . . . . . . . . . .
Fabric 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glass Surfaces 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-10
Servicing Your Air Bag-Equipped Vehicle 1-34 . . . . . . . . . . .
Sheet Metal Damage 6-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lever 2-20, 2-24, 2-25 . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Light 2-27, 2-73 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Speeds 2-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting Into Park (P) 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting, Manual Transmission 2-24, 2-25 . . . . . . . . . . . . . . .
Shifting Out of Park (P) 2-37 . . . . . . . . . . . . . . . . . . . . . . . . . .
Signaling Turns 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Skidding 4-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Snow Plow Prep Package 1-35, 2-54, 4-46, 4-49, 6-72 . . . . .
Sound Equipment, Adding 3-26 . . . . . . . . . . . . . . . . . . . . . . . .
Specifications and Capacities 6-74 . . . . . . . . . . . . . . . . . . . . . .
Specifications, Engine 6-74 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speech Impaired, Customer Assistance 8-4 . . . . . . . . . . . . . . .
Speedometer 2-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stains, Cleaning 6-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter Switch Check 7-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-16, 2-18 . . . . . . . . . . . . . . . . . . . . . . .
Steam 5-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Emergencies 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tips 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel, Tilt 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step-Bumper Pad 4-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Areas 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage, Overhead 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage, Vehicle 6-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stuck: In Sand, Mud, Ice or Snow 5-33 . . . . . . . . . . . . . . . . . .
Sun Visors 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sunglasses Storage 2-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Surge Tank, Coolant 5
-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch, Auxiliary Roof Mounted Lamp 2-54 . . . . . . . . . . . . .
Symbols, Vehicle v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tachometer 2-69 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate 2-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tailgate Removal 2-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillamp Bulb Replacement 6-42, 6-44 . . . . . . . . . . . . . . . . . .
Tape Player Care 3-27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Control, Climate Control System 3-2, 3-3 . . . . .
Theft 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent Feature 3-23 . . . . . . . . . . . . . . . . . . . . . . . . . .
THEFTLOCK
3-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat 6-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Door 2-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tilt Steering Wheel 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Time, Setting the 3-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire Chains 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire Loading 4-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tires 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment and Balance 6-51 . . . . . . . . . . . . . . . . . . . . . . . .
Buying New 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat 5-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation Check 7-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Rotation 6-47 . . . . . . . . . . . . . . . . . . . . . . . .
Loading 4-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .